1) 8-4 (-7x+8) = 4

2) 1-6 (2x-3) = - 2

3) 10+9 (-10-9x) = 8-x

4) - 1+8 (7-6x) = 2x+6

5) 2+3 (1+2x) = - 2x+3

1) 8-4 (-7 х+8) = 4

8+28 х-32=4

-24+28 х=4

28 х=4+24

28 х=28

х=1

2) 1-6 (2x-3) = - 2

1-12 х+18=-2

19-12 х=-2

-12 х=-2-19

-12 х=-21

х=7:4 (дробь)

3) 10+9 (-10-9x) = 8-x

10-90-81 х=8-х

-80-81 х=8-х

-81 х+х=8+80

-80 х=88

х=-11:10 (дробь)

4) - 1+8 (7-6x) = 2x+6

-1+56-48 х=2 х+6

55-48 х=2 х+6

-48 х-2 х+6-55

-50 х=-49

х=49:50 (дробь)

5) 2+3 (1+2x) = - 2x+3

2+3+6 х=-2 х+3

2+6 х=-2 х

6 х+2 х=-2

8 х=-2

х=-1:4 (дробь)