Question

2x+3-x=5. 9-2x=81-6x

Answer 1

$2x + 3 - x = 5 \ x = 2 \ 2x - x = 5 - 3 \ x = 2 \ \ 9 - 2x = 81 - 6x \ x = 18 \ - 2x + 6x = 81 - 9 \ 4x = 72 \ x = frac{72}{4} = 18$