 Yahoo visitors came to this page yesterday by using these algebra terms:

Bing users found us today by using these algebra terms:

• Free online tutorial for algebra 1 polynomials and monomilas
• prentice hall algebra 1 worksheets
• order fractions, how to
• logarithms for beginners
• mult and divide integers
• rules for adding and subtracting multiply divide integers
• "DIVISION expression calculator"
• free printable math worksheets converting decimals into percents
• rational numbers calculators
• algerbra two step equations
• two variable differential equation matlab
• online fraction solver
• solving second order non homogenous differential equations examples
• how to find greatest common factor of a big number
• free math poems
• SIMPLIFYING ALGEBRAIC EQUATIONS
• in maths always multiply before adding
• gauss-jordan elimination visual basic
• gnuplot linear regression
• Glencoe Algebra percent of change
• monomial equation solver
• third order polynomials
• applications of permutation and combinations
• vba excel, solve polynomial
• where does this subtract and plus symbol come from.
• set exam last year downlodable maths question paper
• cubed root of 2x to the 6th power
• algebraic division calculator
• multiplying equations
• 7th grade algebra free worksheets
• combinations and permutations calculator linear order
• holt algebra 1 worksheets lesson 5-7 practice a answer
• algebra power root squares
• algebra expanding a square sum
• expression calculator to solve for x
• factorization online
• middle school math worksheets on set theory
• cpm algebra connections volume one
• 6th grade math integers worksheets-
• solving integro-differential equations laplace transforms
• solve the system of equations by graphing. Then classify the system.
• geometry poem with slope and y-intercept
• is there any software that can i download that can solve various mathematics problems?
• laplace for ti-89 calculator
• algebra trivia mathematics "linear equation"
• how to solve math problems that have least to greatest'
• combining like terms expressions
• McDougal biology practice tests
• example of simplifying an answer
• free maths ebook for GMAT
• 7th grade percent error worksheet
• printable algebra 1 worksheets and answers
• algebra problems
• how to solve simultaneous equations in matlab
• writing equations games
• solving simultaneous equtions using matrix method
• square root to the nearest tenth calculator
• Functional notation worksheet for Algebra I
• adding and subtracting integers review
• multiplying and dividing decimals practice
• holt algebra1
• calculating two gcd no. using loop
• free Aptitude question & answer downlode
• solving linear systems in two variables involving fractions printable worksheets
• online Limit solver
• subtracting worksheets
• change bas in ti-89
• using a system of two equations homework help online
• factoring polynomials solver
• free multiplying and dividing decimals worksheets
• online factoring program
• convert square to cube
• combining like terms expressions worksheets free
• Finding Common Denominator On Calculator
• Scale Problems Algebra
• solve equations online free
• third root function
• houghton mifflin trigonometry fifth edition answers
• online calculator with variables and fractions
• Mixed numbers as decimals
• lesson plans to simplify fractions with polynomials in the fractions
• calculator to solve mole problems
• statistical trivias
• borrowing poem for math
• Math Trivia Question
• free worksheets linear programming
• prentice hall software error pre algebra
• math 2 step verbal expressions to written expression worksheets
• prentice hall algebra 1 chapter 2 worksheet
• calculate square feet free worksheets
• prealgebra properties of exponents
• how to do factoring on a Texas Instrument TI-83 Plus?
• finding values that make the denominator zero
• using like denominators caculator
• worksheets on discriminant
• algebra and trigonometry third edition answer key
• glencoe cd dilations
• basic explanation maths square route and cubes
• 3 Nonlinear equations 3 unknowns
• boolean algebra questions
• algebra equations for third grade
• how to graph an ellipse on ti-89
• math worksheets of fractions in basic essentials of mathematics
• some important questions of maths of class ix
• modular book maths prealgebra
• second order differential equation solver
• solve limits online
• 3 variable systems on ti 84
• online lattice math problems
• absolute value of fraction
• quotient rule calculator
• pre algebra worksheets
• simplify the square root to the nearest tenth
• components of algebraic expressions exams
• use trial and error to solve 4th order quadratic equation
• 8TH GRADE MATH TEST PAPERS
• simplify an algebra equation
• finding exact values from a graph on the ti-83
• 7th grade worksheets on order of operation
• Discrete mathematics worksheets to print out for Grade 6
• solve second order polynomial
• math problem solver
• fastest way to solve compound interest
• adding exponents with square roots
• mathematical induction for dummies
• multiple choice test questions for algebra II linear programming
• what is the greatest common factor and lowest common multiple 56,and 84. using prime numbers
• solving limits on calculator
• simplifying rational expressions with negative exponents
• free worksheets for multiplying by 11
• Prentice Hall, Inc. Algebra 1 chapter 3 quiz study guide
• math games using inequalities
• slope free online calculator
• sixth grade math examples of standard form math problems
• difference in 2 squares
• mcqs+logic+mathematics
• Calculate Least Common Denominator
• Math substitution worksheet
• Find the sum of the first n integers java
• scale factor exercises
• division of polynomials by polynomials converter
• adding, subtracting, multiplying and dividing positive and negatives numbers
• worksheets on dividing decimals
• free high school algebra tutorials
• how to system of linear inequalities on ti 84 plus calculator
• linear equations in 9th grade
• online graph solution
• investigatory math
• how do i convert a mixed fraction to a decimal
• printable variable worksheet
• graph y=square root of -x
• ti 83 plus emulator
• KS3 Maths Surface area of prisms
• algebra graphing problems
• scientific notation multiplication worksheet
• texas ti-83 plus how to save as formula
• factoring polynomial equation calculator
• VENN DIAGRAM ks2 FREE QUESTIONS
• find slope in table
• variable expression in word form activity
• scale factor worksheet
• Balancing Chemical Equation Solver
• order fractions from least to greatest
• factorial casio9850
• multiplying and dividing algebraic equations using variables
• Polynomial Factoring calculator free
• factoring college algebra
• free work sheets on scatter plots
• solving algebraic equations with fractional exponents
• how to add subtract multiply divide integers
• problem solving investigatory project
• "application of logarithmic function"-college-elementary+high school
• basic division in math powerpoints
• algebra solution for square root
• algebra help lcd
• Add two integers w/o using '+'
• free grade 7 home work help
• money time and simple math
• how to turn fractions into decimals
• free online algebra help for dummies
• Calculator you can do fractons on online
• 6th grade chapter 3 math test scott foresman
• positive and negative integers free worksheets
• simple algebra worksheets
• convolution in ti 89
• binomial expansion calculator
• adding, subtracting and multiplying odd and even numbers
• interactive pracites maths gcse exam
• subtraction equations
• adding subtracting multiply and divide fractions
• HOW TO ARRANGE THE NUMBERS WHEN MULTIPLYING DECIMALS
• graphing trig functions worksheets
• free online printable distributive property word problems
• how to solve higher derivatives in matlab
• solve system on ti 84
• algebra sequence and series questions grade 10
• worksheets solving fractional equations
• equations with rational exponents
• mathematical trivia on algebra
• a cheat on mutliplying by 7
• online factoring
• free CLEP Algebra Exam Guide
• simplifying quotients
• math trivia
• Multiplying Math Loop Game
• online calculator that does variable problem s
• worksheets graphing equations in slope intercept form
• glencoe/mcgraw hill worksheet
• VB calculate formula
• formulas with square roots
• AJmain
• College algebra help
• high school mathematics trivia
• Algebra story problem cheat
• liniar programming pdf
• algebra college students lial miller hornsby software
• changing the subject of the formula worksheet
• integration second order differential equations
• slope formula statistics
• factorize 3rd order polynomial
• free test for McDougal Littell pre-algebra
• Equation Calculator With Substitution
• HOW TO FIND THE SQUARE ROOT OF A QUADRATIC EQUATION
• free printable 2nd grade math work books
• 6th grade solving equations with decimals
• best step by step algebra help
• diophantus chart
• how to get the square of equation in matlab
• fx var methodology for dummies
• school+mathematics+exam papers
• convert decimal number to equation
• combining like terms activity
• use an equation to solve a problem with square root worksheets
• change the log base on a ti-83 calculator
• ti-89 root solver
• temperature conversion table KS2
• Finding slope using Ti-84
• Career Assessment Test paper downlode pdf
• domain of hyperbola
• Glencoe Algebra 2 worksheet answers
• Pdf files on aptitude questions
• english exam for yr.8
• divisibility worksheet
• free algebra word problem solving
• worded problem meaning in math
• factoring with cubic functions
• integers worksheets
• graphing coordinates to make a picture math worksheets
• how did the egyptians used equations
• number shrinking patterns worksheets
• free books for computer aptitude test
• logs ti 89
• get answers to algebra problems
• implicit differentiation online calculator
• printable worksheets adding and subtracting integers free
• adding and subtracting negative numbers worksheets
• math textbook solutions
• free basic maths revision
• algebra year 8 worksheets
• Cool Math 4 Kinds
• function translation compression stretch
• solving algebra equations with fractions
• high school accounting worksheets
• polynomial fit C code
• calculator ROM code
• math sat worksheet
• Solving Equations Fractions
• special values chart
• 6th grade variables and expressions worksheet
• aptitude questions.pdf
• how TI 84 calculator are helping us in everyday life
• subtracting 8 worksheets
• solving rational equations worksheet
• math Trivia
• Trigonometric equations solver for ti-89
• teaching lcm powerpoint math
• adding and subtracting rational expressions worksheets
• printable worksheet integer subtraction algebra
• free elementary power math samples
• algebra plottings pictures
• multiplying squared integers
• Excel formula for SLOPE
• free basic exponents worksheets
• solution of second order differential equation
• the number 2 x 10 to the 15 power is more than one
• java program to convert 5 digit numeric to words
• maths work sheets for KS2
• mcdougal littell middle school math course 2 ANSWERS
• solve expression calculator
• middle school math with pizzazz! book b
• find the median, algebra 1, free help
• Popular Math Trivia
• add rational expression on ti calculator
• fraction to decimal worksheet
• POWER POINT WITH ONE STEP EQUATIONS
• yr 8 math games
• math grade 3 work sheets
• free Algebra 1 homework help on the internet
• meaning of subtracting integers
• Glencoe Algebra 1
• 6th grade pre algebra worksheets
• math-steps on adding unlike denominators
• write equation in vertex form
• solving 3 equations and 3 unknowns
• printable graph algebra
• adding & subtracting integer fractions
• permutation worksheet
• holt algebra 2 book online free
• cubed equation
• free grade six tutorials for integrated science
• free online graphing calculator like ti 85
• ebook cost accounting
• multiplying integers puzzle
• third root calculator
• BASIC MODEL TEST PEPER FOR ENGLISH
• powers and square root tests and worksheets
• how to solve the slope and y- intercept
• math poems
• online math sheets for Prentice Hall Algebra
• adding and subtracting fractions worksheets
• step by step guide to algebra
• write decimal numbers in base 4
• How to multiply monomials on the TI-83 Calculator
• lcm free worksheet
• online rational expressions calculator
• Powerpoints for dividing fractions and mixed numbers
• multiplying and dividing common fractions worksheets
• ebook accounting free
• egyptian adding, subtracting, multiplying and dividing
• solved exercises algebraic topology
• simple applications in algebra
• y9 maths exam paper
• "5th Grade Math" + "Rounding Decimals"
• sample word problems+ algebra +geometry
• prentice hall mathematics algebra 1 Teachers Edition
• applications of algebra
• cubed square root on a scientific calculator
• how to solve laplace transforms on ti voyage 200
• sum of on on calculator
• how to calculate gcd
• math kids different combinations
• poem mathematics of inverse function
• SOLVING POWER 2 FORMULA
• how to sove simultaneous equation using mathcad
• math promblems for forth graders
• "Word problems" Algebra 8th grade
• simplifying expressions calculator
• math + word problems + grade 11 + completing the square
• free sat papers ks2 maths
• free online calculator for multistep equations
• adding and subtracting negative and positive fractions
• 2nd order+differential equation+matlab
• finding x intercepts of vertex form
• graph vertex and quadratic equations
• beginning algebra worksheet free to print
• how to calculate combination in matlab
• mcdougal world history chapter 5 worksheets
• greatest common factor backwards
• free comparing and ordering integers worksheets
• graph slope online
• Common Denominator Calculator
• scott foresman answer sheets middle school math
• Pre- algebra with pizzazz
• cube root of 56 symplified
• calculator automatically turn off 83
• real online graphing calculator
• free math worksheets gr 3
• free integer word problems
• examples of math trivias
• multiply rational expressions calculator
• Sixth grade probability questions with the solutions
• find inverse ti 89
• greatest common factor formula
• equation for a perpendicular line
• solving quadratic equation using matlab
• college algebra and trigonometry fourth edition answer key
• algebra worksheet x y
• free online calculator for algebra 1 for help
• 7th grade algebra free worksheets for student help
• turning mixed numbers into a percent
• systems of linear equations worksheets
• graph compound inequality cartesian coordinate system
• multiplying integers worksheet
• Solving a system of equations calculator lab
• how texas instruments Ti-83 "modular"
• integer printable worksheets
• t183 graphics calculator
• teaching adding and subtracting integers
• add decimals to tenths worksheet
• how do you do common denominators and simplify them ?
• matlab simultaneous equations
• printable graphing assignments
• solve my ratio
• how to find ratio formular
• Where do you use exponents in everyday life
• quadratic equation worded problem with solution
• Solving Equations by Adding or Subtracting Decimals
• calculate greatest common divisor
• chemistry worksheets on smart materials GCSE
• decimal of square root of 5
• free online 6th grade algebra games
• hyperbola fit matlab
• Free Algebra worksheets
• year 8 maths factorising
• liner equation
• square root exponent
• inverse functions ks3
• Aptitude question & answer downlode
• Algebra I prentice hall online worksheets
• fractions adding multiplying dividing subtracting
• free algebra worksheets for class 7
• math word problem worksheets
• linear algebra forth edition homework solutions
• 5th grade distributive property printable worksheet
• nonlinear equation solver + online
• slope of a quadratic equation
• quadratic formula program for calculators keystrokes
• what's my rule worksheets for 2nd grade
• algebra online problem solver
• compound inequality solver
• Inputting definte integrals in the TI-84 Silver Plus
• multiplying integers game
• variables & patterns introducing algebra book 2
• how to multiply and divide radical expressions
• answers for 4.4 Mcdougal littel math course 2
• getting rid of cubed number in algebra
• histogram free worksheets for 6th grade
• solving one step equations practice worksheets
• practice on exponents for beginners
• solve simultaneous equation online
• tutor excel
• second order differential equation matlab
• differential equation calculator
• chapter 7 test math elementary school florida "assessment guide"
• cubed roots math exercises
• gcd calculator linear form
• poems in math with trigonometry
• how to solve third equation
• solving systems of equations with fractions
• dummit and foote solutions university of chicago
• adding integers free printable worksheets
• practice worksheet for adding and subtracting negative numbers
• liner algebra + reflection
• calculate linear feet
• free revision math for primary 4 student
• beginner algebraic word problems
• Antiderivative Solver
• substitution calculator
• quadratic equation word problem solver
• domain of a function using a hyperbola
• ways used to factor third order equation
• taking a cube root on a calculator
• equations using combining like terms examples
• nonlinear system equation solve matlab
• ti-84 completing the square
• finding the roots of polynomials with worded problem
• worksheet simplify variable expressions middle school free
• Free Math Sheets 3rd Graders
• how to learn algebra 1 fast
• math trivia in trigonometry
• printable worksheet on associative and commutative property
• "multipling binomials worksheets"
• IT-83 Plus calculator equation functions
• algebra solution for square root prime factorization
• simulatneous exponential equation solver
• free printout for mathmatic for kiddos
• Skills First Grade Lesson Plan
• gcse algebra worksheets
• tsu ch' ung chih
• solve my precalculus problems
• how to convert quadratic function in standard form
• intermediate algebra charles p.: transition practice test
• extracting roots of quadratics on ti 83 calculator
• mathematics exercices levelA
• how to write algebraic formulas
• how to square root method quadratic equations
• Finding slope using Ti-84 Printable steps
• 8th grade math integers printable worksheets
• math variables worksheet
• onestep equations worksheet generator
• limit calculator infinity
• "fractions + printable + worksheet"
• calculate largest common factor
• my algebr
• all fractions in order from least to greatest
• +solving +polynomial +casio +calculator
• free absolute value worksheets
• ti 81 calculator programming kinetic equations
• www.pre-alegebra .com/self check quiz
• softmath.com
• TI-83 plus cube root function
• math formulas algorithm
• java calculate sum of integers
• approximate radicals with a calculator
• using charts to solve alegebra 1 homework
• solve any algebra work radical expressions
• changing logs on ti-83
• fraction common denominator calculator
• +work +sheets for 9th graders in algebra
• texas calculator usable online
• calculate a year sales from the year previous equation
• free online exercise biology grade 10 GCSE
• calculate formulas ppt
• simplifying rational expressions calculator
• writing an equation worksheet
• elementary math trivia
• Dummit Foote solution manual
• sample question papers for class viii
• rules in subtracting positive integers
• two ways to calculate LCM
• rules for adding subtracting with unlike signs
• word problem rational algebraic expression
• how to change a mixed number into a decimal
• cost accounting free books
• teach me algebra 1
• aptitude test paper with answer
• Prentice Algebra 1 book pages
• scale factor for middle school
• lowest common denominator worksheet
• multiplying and dividing fractions worksheet
• free worksheets math pI 2 circles
• solving initial value problems of first order linear differential equations
• solution Algebra Hungerford
• trigonometric function problem & answer
• discriminant directrix
• pre algrabra
• sample of decimal java
• Activities for multiplying positive and negative variables
• math puzzle and poem Algebra
• simplifying multiplication expressions
• multiplying and dividing powers
• Free Answer Algebra Problems Calculator
• Solving a rational equation that simplifies to a quadratic equation:
• greatest common divisor float C++
• how to convert decimals into fractions on calculator
• Y= editor t1-89
• order of operations radicals exponents worksheets
• common multiple calculator
• solve basic matrix in matlab
• adding positive and negative numbers in java
• differential equation partial ti89
• answer key for glencoe math book
• holt Algebra 2 Texas Teacher's Edition with Lesson Tutorial Video Preview CD
• 10th Algebra homework printouts
• least common denominator in quadratics
• what is the square of a difference?
• cost accounting practice exams
• maths exercises of powers
• simultaneous equations worksheet
• solve 3rd order
• algebra
• selected answers in holt mathematics course 3 georgia
• "calculator" "equilibrium concentration"
• math 7th formula chart
• aptitude question on science
• adding and subtracting numbers of base 3
• glencoe mathematics course 3 teachers edition dictionary online
• 4.2 math practice 6th grade
• honors algebra 2 problems
• factoring numbers calculator
• integer worksheets
• solve boolean algebra
• show the problems on integral calculas
• cheat sheet probability formulas
• math help writing mixed fraction percent as decimal
• storing ti 89
• solving system by substitution calculator
• polar on ti 89
• "two variable" differential equation matlab solve
• online least common denominator calculator
• math combinations for first grade
• activities for solving equations by multiplying
• "divergence of a cross product" identity proof
• Tutorial For Graphing Linear Equations
• college algebra problem solvings
• free inequality worksheets
• 10-3 skills practice properties of logarithms
• log expression calc
• subtracting and adding integers problems
• generate free math worksheets integers
• free maths tests for year 8 students
• find roots of equation using casio
• evaluating expressions worksheet practice
• greatest common factor holt cheat sheet
• convert decimal to percent 6th grade level
• online pre-algebra Prentice Hall workbook
• math function, worksheet, printable
• Laplace transform for dummies
• solving systems using substitution calculator
• ti 83 calculator graph slope of line
• printable math worksheets "Mean and Mode"
• exponent games worksheets
• first order ode+green function
• solve equasions
• using vertex to find equation of a function
• online answers for holt middle school math course 2 answers for assignment 2-5
• runge kutta second order differential matlab
• algebra 2 online free
• solve the range of a linear equation
• finding the slope of a quadratic
• learn algebra fast
• symbolic nonlinear equation solution
• Holt, Rinehart, and Winston Algebra 2 answers
• matlab solve simultaneous differential
• ppt edhelper graphs and charts free worksheets
• free factor a trinomial calculator
• math subtraction equation terms
• free printable worksheets middle school expression writing
• math algebra trivia with answers
• C# code for solving quadratic equation
• adding decimals together worksheet for kids
• second order non-homogeneous differential equation pdf
• year nine practis Maths
• least common factor calculator
• past exam paper primary level
• algibra
• pre algebra cheats
• complete the square interactive
• game mathematica 1 grade online
• adding and subtracting integers graph
• prentice hall chemistry workbook lab 9 answers
• simultaneous eqation solver, containing quadratic
• bash calculate mid value
• Solve My Math Problem
• how to solve GRE percentage problems
• free printables for third grade line plots
• how to graph parabolas on ti-84 plus
• teach yourself algebra
• answer key for spring sol released test for math 2004
• cost accounting tutorials
• formulas conversion fraction to decimals
• basic algebra power
• prealgerba puzzles
• If you know the greatest common factor of two numbers is 1, can you predict what the least common multiple will be?
• cubed polynomials
• free worksheets and games for 8th grade
• How do you put absolute values into a graphing calculator?
• what is the range of a function + TI-83 Plus
• algebra formula for finding the percentage
• adding and subtracting real numbers free worksheet
• convert fraction into degrees
• multiplying and dividing roots
• simplifying equations worksheet
• 11+ maths - algebra printable working sheets
• rearranging physics formulas worksheet
• Reduce square roots to lowest common denominator
• convert fraction decimal
• prentice hall grade 5 math
• laplace solver ti-89
• greatest common factor machine
• free printable multi step equations
• solve for equation with data, excel
• Dividing Decimal Techniques
• practice workbook mcdougal littell algebra 1 free answers
• Square Roots - Method
• how to solve for x using a graphing calculator
• Square Root Formula
• free primary school science advanced examination papers
• fractions in algebra equations
• combining like terms worksheet math
• mcdougal littell online algebra 2 test generator
• adding and subtracting equations activities
• scientific calculator free cubic root calculator
• fifth grade partial sum practice
• graphing calculator emulator online recursive free
• solving simple equations free worksheet
• equation calculator with fractions
• MATLAB 2nd order nonlinear ODE
• lineal metres
• algebra 1 concept and skills chapter 2.7 problem 48
• algebra helping software
• find a real-life application of a quadratic function. State the application, give the equation of the quadratic function,
• algebraic expressions calculator free
• sample word problems in quadratic equation
• combining like terms powerpoint
• distributive property equation with integers worksheets
• maths working investigatory projects
• maple root solver
• multiplying expressions calculator
• spss
• blank slope graph paper
• Algebra 2 homework help: answers to questions
• changing decimals to fractions machine
• learning algebra online
• convert decimal to common fractions
• trinomial calculator online
• test on balancing chemical formula
• how to solve alegbra in KS2
• math problems and solutions aptitude test free
• TRIG ONLINE SOFTWARE
• number to the square of fraction
• dividing polynomial with ti-83 calculator
• online algebra test
• college ALGEBRA CLEP/ PRACTICE TEST
• converting probability to decimal
• holt mathematics dividing by decimals word problems
• storing formulas in ti-84 calculator
• mcdougal littell algebra 1 cheat sheet
• simple instructions for algebra factoring
• "add positive and negative integers worksheet"
• 5th grade math problem solving inequalities
• non-homogeneous second order differential equation example
• +Help with 6th grade algebra
• interactive pre-algebra books online
• simultaneous equation matlab
• simplifying rational expressions worksheet
• RATIONAL EXPRESSIONS PRINTABLE WORKSHEETS
• +Pythagorean Theorem Printable Worksheets
• difference between adding and multiplying algebraic fractions
• how to convert decimal to ratio form?
• 7th grade algebraic equations help
• Essentials of Geometry for College Students + Lial + free online
• answer to changing mixed numbers to decimals
• simplifying e logarithms of exponents
• logarithmic expressions expand equation
• Metre to Lineal Metre
• What Is the Partial Sums Method in Place Value
• MIT couse using matlab to solve system ODE
• lesson plans for 9th grade statistics
• composite function solver
• printable algebra 1 notes
• mcdougall littell worksheets
• multi step algebra problems worksheets
• Trigonometry Trivia
• quadratic to standard online converter
• alebra calculator
• how to sove exponents
• finding the least common multiple of an algebraic fraction
• algebra 1 chart problems
• statistics questions yr 10\
• algebra chapter
• Begenning and intermediate algebra free tutorials
• decimals to mixed numbers
• writing equations in microsoft powerpoint
• quadratic calculator with a greater exponent than 2
• PRE-ALGEBRA WITH PIZZAZZ! Awsner book
• ti 89 bool*
• basic 9th grade math test
• sample investigatory projects in math "algebra problems"
• free saxon algebra 2 answer key 3rd edition
• coordinate graphing ppt
• matrix multiplication "high school algebra" simple
• free aptitude question
• how do u find greatest common denominators
• how to teach yourself algebra