решить уравнение 56y-36y-9=153 (158u-21) * 3+27=234 (36t+98) / 14=25 (12x+30x+42) / 6=21

Найдем корни.

1) 56 * y - 36 * y - 9 = 153;

56 * y - 36 * y = 153 + 9;

y * (56 - 36) = 162;

y * 20 = 162;

y = 162/20;

y = 8.1.

2) (158 * u - 21) * 3 + 27 = 234;

(158 * u - 21) * 3 = 234 - 27;

(158 * u - 21) * 3 = 207;

(158 * u - 21) = 207/3;

(158 * u - 21) = 69;

158 * u = 69 + 21;

158 * u = 90;

u = 90/158.

3) (36 * t + 98) / 14 = 25;

36 * t + 98 = 25 * 14;

36 * t + 98 = 350;

36 * t = 350 - 98;

36 * t = 252;

t = 252/36;

t = 7.

4) (12 * x + 30 * x + 42) / 6 = 21;

12 * x + 30 * x + 42 = 21 * 6;

42 * x + 42 = 126;

42 * x = 126 - 42;

42 * x = 84;

x = 84/42;

x = 2;

Ответ: х = 2.