Question

galera como faço essaa ? x-1+12=-7x-25???

Answer 1

A)

$x-1+12=-7x-25 \\ x+7x=-25-12+1 \\ 8x=-37+1 \\ 8x=-36$

$x=- \frac{36}{8} =- \frac{9}{2}$

S={ $- \frac{9}{2}$}