Question

-2 ( x + 1 ) = x + 7

Answer 1

-2(x+1)=x+7

-2x-2=x+7

-2x-x=7+2

-3x=9 (-1)

3x=-9

x=-9/3

x=-3

Resposta:  -3

Answer 2

-2 ( x + 1 ) = x+7
-2x -2 = x + 7
-2x - x = 7 + 2
-3x = 9
x= 9/-3

x= -3