2(1-х)-4(2х+8)=8х+28 решите уравнение
2-2х-8х-32=8х+28 -2х-8х-8х=28+32-2 -2х=58 х=58:(-2) х=-29
правильно
2-2х-8х-32=8х+28 -2х-8х-8х=28-2+32 -18х=58 18х=-58 х=-58:18 х=-3.2