Question

How do you solve `4x + 8 = 7x-7`?

Answer 1

Isolate the x's on one side of the equation and solve for x.

Explanation:

4x - 7x = -7 - 8

-3x = -15

x = 5

Hopefully you understand now.

Answer 2

`4x+8=7x-7`

`rarr4x+8+7=7x`

`rarr4x+15=7x`

`rarr15=7x-4x`

`rarr15=3x`

`rArrx=15/3=5`