Уравнение 8.2-2х =5х-2.3
8.2-2x=5x-2.3 -7x=-10.5 x=-10.5/-7 x=1.5
8.2-2x=5x-2.3 8.2=5x-2.3+2x 8.2+2.3=5x+2x 10.5=7x x=10.5/7=1.5