Решите уравнение:a) - (x+29) - (7-4x) = 24b) - 4x-12=15x+45c) 2 (x+17) = -4x-38d) 6 (2x-7) - 3x=-4x+49

Решим уравнения.

a) - (x + 29) - (7 - 4 * x) = 24;

Раскроем скокби.

-x - 29 - 7 + 4 * x = 24;

Приведем подобные.

3 * x - 36 = 24;

3 * x = 24 + 36;

x = 8 + 12;

x = 20;

b) - 4 * x - 12 = 15 * x + 45;

-4 * x - 15 * x = 45 + 12;

-19 * x = 57;

x = - 57/19;

x - 3;

c) 2 * (x + 17) = - 4 * x - 38;

x + 17 = - 2 * x - 19;

x + 2 * x = - 19 - 17;

3 * x = - 36;

x = - 36/3;

x = - 12;

d) 6 * (2 * x - 7) - 3 * x = - 4 * x + 49;

12 * x - 42 - 3 * x = - 4 * x + 49;

9 * x - 42 = - 4 * x + 49;

9 * x + 4 * x = 49 + 42;

13 * x = 91;

x = 91/13;

x = 7.