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# Try our Free Online Math Solver!

Online Math Solver

 Depdendent Variable

 Number of equations to solve: 23456789
 Equ. #1:
 Equ. #2:

 Equ. #3:

 Equ. #4:

 Equ. #5:

 Equ. #6:

 Equ. #7:

 Equ. #8:

 Equ. #9:

 Solve for:

 Dependent Variable

 Number of inequalities to solve: 23456789
 Ineq. #1:
 Ineq. #2:

 Ineq. #3:

 Ineq. #4:

 Ineq. #5:

 Ineq. #6:

 Ineq. #7:

 Ineq. #8:

 Ineq. #9:

 Solve for:

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# Solving Systems of Linear Equations

BY CRAMER’ S RULE

Solve a System of Equations with 3 variables:

Number each original equation 1,2 & 3.

Choose any 2 equations and use the addition
method to eliminate one of the variables. Number
the resulting equation with only 2 variables as
equation
#4.

Choose remaining equations and use addition
method to eliminate the same variable. Number
the resulting equation as equation #5.

Use the elimination method for equations 4 & 5,
eliminating either of the remaining 2 variables and
solve
for other.

Substitute that solution in either equation 4 or 5 and
solve for the other remaining variable.

Substitute both solutions in any of the original
equations and solve for the final remaining
variable .

Solution : (0,2,2)

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