Решите уравнение - 8 (3+х) + х=4 - 6=-9 (7+x) + 4x - 8x+4 (7+8x) = 4x+7 - x+2 (7-9x) = x-4 - 7x+9 (2+x) = -4x+3

Вычислим корни.

1) - 8 * (3 + х) + х = 4;

-24 - 8 * x + x = 4;

-24 - 7 * x = 4;

-7 * x = 4 + 24;

-7 * x = 28;

x = - 28/7;

x = - 4.

2) - 6 = - 9 * (7 + x) + 4 * x;

-6 = - 63 - 9 * x + 4 * x;

-6 = - 63 - 5 * x;

5 * x = - 63 + 6;

5 * x = 57;

x = 57/5.

3) - 8 * x + 4 * (7 + 8 * x) = 4 * x + 7;

-8 * x + 28 + 32 * x = 4 * x + 7;

24 * x + 28 = 4 * x + 7;

24 * x - 4 * x = 7 - 28;

20 * x = - 21;

x = - 21/20.

4) - x + 2 * (7 - 9 * x) = x - 4;

-x + 14 - 18 * x = x - 4;

-19 * x + 14 = x - 4;

-19 * x - x = - 4 - 14;

-20 * x = - 18;

x = 18/20;

x = 9/10.

5) - 7 * x + 9 * (2 + x) = - 4 * x + 3;

-7 * x + 18 + 9 * x = - 4 * x + 3;

2 * x + 18 = - 4 * x + 3;

2 * x + 4 * x = 3 - 18;

6 * x = - 15;

2 * x = - 5;

x = - 2.5.