Question

9(3(x+1)-2x)=7(x+1)     все

Answer 1

9*(3х+3-2х)=7х+7
9*(х+3)=7х+7
9х+27=7х+7
9х-7х=7-27
2х=-20
х=-202
х=-10
Ответ ---- (х=-10)