Помогите решть:

-27x+220=-5x

7a=-310=3a

-2x+16=5x-19

25-3b=9-5b

3+11y=203+y

1) - 27 х+220=-5 х

-27 х+5 х=-220

-22 х=-220

х = 10

2) 7 а==310=3 а - - - ?

3) - 2 х+16=5 х-19

-2 х-5 х=-16-19

-7 х = - 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