Question

5x - x + 12 = -5 + 2x

Answer 1

2x = -17
x = -17/2
x = -8,5

Answer 2

$5x - x + 12 = -5 + 2x\\\\ 5x-x-2x=-5-12\to \\\\ 2x=-17\to \\\\ x= \frac{-17}{2} \to \\\\\ ou \\\\ x=-8,5$