1. - 9а + 8 = - 10a - 2
2. 7m + 1 = 8m +9
3. - 12n - 3 = n - 3
4. 4 + 25y=6+ 24y
5. 11 - 5z = 12 - бz​

1) -9a + 8 = -10a - 2;

-9а + 10а = -2 - 8;

а = -10;

2) 7m + 1 = 8m + 9;

7m - 8m = 9 - 1;

m = -8;

3) 4 + 25y = 6 + 24y;

25у - 24у = 6 - 4;

у = 2;

4) 3 * (4x - 8) = 3x - 6;

12х - 24 = 3х - 6;

12х - 3х = -6 + 24;

9х = 18;

х = 18 / 9 = 2;

5) c - 32 = -7 * (c + 8);

с - 32 = -7с - 56;

с +7с = -56 + 32;

8с = -24;

с = -24 / 8 = -3.

Объяснение: