9(3(x+1)-2x)=7(x+1) все

Question

9(3(x+1)-2x)=7(x+1) все

Answer 1

Решите задачу:

Answer 2

9*(3х+3-2х)=7х+7
9*(х+3)=7х+7
9х+27=7х+7
9х-7х=7-27
2х=-20
х=-20\2
х=-10
Ответ ---- (х=-10)