2х-3(4-х)=5-(х-1) 5x-12 = 6-x 5х+х=12+6 6х=18 х=3 _________________________________ 8(3-2х)-(х-2)=9 8(3-2 x)-x+2 = 9 24-16х-х+2=9 17-17 x = 0 x = 1 _________________________________ 5х-6(2х+7)=13-(х+1) 5 x-6 (2 x+7) = 12-x 5х-12х-42=12-х -6 x-54 = 0 x = -9