10 (3*-2) - 3 (5*+2) + 5 (11-4*) = 25

10 * (3 * x - 2) - 3 * (5 * x + 2) + 5 * (11 - 4 * x) = 25;

Найдем корень.

10 * 3 * x - 10 * 2 - 3 * 5 * x - 3 * 2 + 5 * 11 - 5 * 4 * x = 25;

30 * x - 20 - 15 * x - 6 + 55 - 20 * x = 25;

Приведем подобные.

(30 * x - 15 * x - 20 * x) + (-20 - 6 + 55) = 25;

x * (30 - 15 - 20) + (55 - 20 - 6) = 25;

x * (15 - 20) + (35 - 6) = 25;

x * (-5) + 29 = 25;

-5 * x + 29 = 25;

-5 * x = 25 - 29;

-5 * x = - 4;

5 * x = 4;

x = 4/5;

x = 0.8;

Ответ: х = 0,8.