Problema Solution
how do i solve this algebra math problem nine less than 4 times a number is the same as twice the number increased by 11 what is the unknown number
Answer provided by our tutors
let 'x' be the number we are looking for then
nine less than 4 times that number (x) is: 4x - 9
twice the number (x) increased by 11 is: 2x + 11
nine less than 4 times a number is the same as twice the number increased by 11 so we can write
4x - 9 = 2x + 11
4x - 2x = 11 + 9
2x = 20
x = 20/2
x = 10
the unknown number is 10.