Решите уравнение 1,2X-3=0,8X-27
1.2х-3=0.8х - 27 1.2х - 0.8х = -27+3 0.4х = -24 х = -24/0.4 х = 60
1.2х-0.8х=3-27 0.4х=-24 х=-24/0.4 х=-60