Question

equação de 1 grau:-5x-1=-11

Answer 1

$-5x-1=-11 \\ -5x=-10 \\ x= \frac{-10}{-5} = 2$

Answer 2

-5x-1=-11
-5x=-11+1 
-5x=-10 .(-1)
5x=10 ⇒ x=10/5  ⇒x=2