Verified answer

x-(2x + 1) = 8-(3x + 3)

x-2x-1 = 8-3x-3

-x-1 = 5-3x

-x+3x = 5+1

2x = 6

x = 3

Comprobamos:

3-(2*3+1)=8-(3*3+3)

3-7 = 8-12

-4 = -4

Comprobado. X=3 es el resultado.