Решите уравнение 7х – 12 = 3(9х + 8) – 2х
7х-12=3(9х+8)-2х 7х-12=27х+24-2х 7х-27х+2х=24+12 -18х=36 х=36 / (-18) х= -2
спасибо
7х-12=27х+24-2х 7х-27х+2х=24+12 -18х=36 х=-2