3x-2=7, 4x+3=-2x, 6+5x=-2x-1, 2 (x-3)=3x, 9+2 (3-4x)=2x-3 решите уровнения
3х-2=7 3х=7+2 3х=9 х=9:3 х=3
3х-2=7 4х+3=-2 6+5х=-2х-1 2(х-3)=3х 3х=7+2 4х=-2-3 5х+2х=-1-6 2х-6=3х 3х=9 4х=-5 7х=-7 2х-3х=6 х=9:3 х=-5:4 х=-7:7 -1х=6 х=3 х=-1.25 х=-1 х=6:(-1) х=-6