Помогите решть: -27x+220=-5x 7a=-310=3a -2x+16=5x-19 25-3b=9-5b 3+11y=203+y
1) -27х+220=-5х -27х+5х=-220 -22х=-220 х = 10 2) 7а==310=3а ---? 3) -2х+16=5х-19 -2х-5х=-16-19 -7х = -35 х = 5 4) 25 - 3b = 9-5b -3b + 5b = 9 -25 +2b = -16 b = -8 6) 3+11y =203 + y 11y -y =203 -3 10y = 200 y = 20
220=-22x -7x=21 10y=200 x=-10 x=-3 y=20 10a=310 16=8b a=31 b=2