2/3 (1 1/2 х+3/5) - 4/5 (5/12 х-1/2) = 1 3/5

Найдем х уравнения.

2/3 * (1 1/2 * х + 3/5) - 4/5 * (5/12 * х - 1/2) = 1 3/5;

2/3 * (3/2 * х + 3/5) - 4/5 * (5/12 * х - 1/2) = 8/5;

Раскроем скобки и приведем подобные значения.

2/3 * 3/2 * x + 2/3 * 3/5 - 4/5 * 5/12 * x + 4/5 * 1/2 = 8/5;

x + 2/5 - 4/12 * x + 2/5 = 8/5;

x + 2/5 - 1/3 * x + 2/5 = 8/5;

x - 1/3 * x = 8/5 - 2/5 - 2/5;

3/3 * x - 1/3 * x = (8 - 2 - 2) / 5;

2/3 * x = 4/5;

x/3 = 2/5;

5 * x = 3 * 2;

5 * x = 6;

x = 6/5;

Ответ: х = 6/5.