Решите уравнения 11+6x=77+7x, - 30-8x=-16x+90, 8x+17 = - 3x+105, - 2 (y+3) = - 21+3y, 1 (2-m) + 3 (m-3) = - 13, - 1 (1-3b) - 4=4, - 2 (7-3y) = 16-16 (2-y).

1) 6 х-7 х=77-11

-х=66

х=-66

2) - 30-8x=-16x+90

-8 х+16 х=90+30

8 х=120

х=152.5

3) 8x+17 = - 3x+105

8x+3x=105-17

11x=71

x=6 5/11

4) - 2 (y+3) = - 21+3y

-2y-6=-21+3y

-2y-3y=-21+6

-5y = - 15

y=3

5) 1 (2-m) + 3 (m-3) = - 13

2-m+3m-9=-13

5m=-13+9-2

5m = - 6

m=1.2

6) - 1 (1-3b) - 4=4

-1+3b-4=4

3b=4+1+4

3b = 9

b=3

7) - 2 (7-3y) = 16-16 (2-y)

-14+6y=16-32+16y

6y-16y=16-32+14

-10y = - 2

y=0.2