10x+2 * (7a-2) = 5*94x+3) + 3x5 * (3c+2) = 8 (9-8c)

Найдем корни уравнений.

1) 10 * x + 2 * (7 * х - 2) = 5 * 9;

Раскроем скобки.

10 * x + 14 * x - 4 = 45;

24 * x - 4 = 5;

24 * x = 45 + 4;

24 * x = 49;

x = 49/24;

Ответ: х = 49/24.

2) (4 * с + 3) + 3 * 5 * (3 * c + 2) = 8 * (9 - 8 * c);

4 * с + 3 + 15 * (3 * с + 2) = 8 * 9 - 8 * 8 * с;

4 * c + 3 + 45 * c + 30 = 72 - 64 * c;

49 * c + 33 = 72 - 64 * c;

49 * c + 64 * c = 72 - 33;

113 * c = 39;

c = 39/113.