Х + 3 = 2х + 5 2х - 1 = - 3 6 - 2х = х
1) -х = 2 х = 2: -1 х = -2 2) 2х = -2 х = -1 -3х = -6 х = 2
1)x+3=2x+5 x-2x=5-3 -x=2 x=-2 2)2x-1=-3 2x=-3+1 2x=-2 x=-1 3)6-2x=x 3x=6 x=6:3 x=2