Question

-(-7x) - (6+5x)=2(x-3)

Answer 1

7x-6-5x=2x-6

2x-6=2x-6

0=0.

Ответ: 0.

Answer 2

$-(-7x) - (6+5x)=2(x-3) \ \ 7x-6-5x=2x-6 \ \ 2x-6=2x-6 \ \ xin(-infty; +infty)$