Помогите решить уравнение

(1 7/8х-3 7/12)*4 4/5=0,8

Найдите значение выражения

5 целых 2/3 / 1/3- 1 целая 7/12* 24/19+(1 целая 1/2) в кубе / (1/4) в квадрате

( 1 7/8х - 3 7/12) * 4 4/5 = 0,8(15/8х - 43/12) * 24/5 = 8/1015/8х - 43/12 = 8/10 : 24/515/8х - 43/12 = 8/10 * 5/2415/8х - 43/12 = 1/2 * 1/315/8х - 43/12 = 1/615/8х = 1/6 + 43/1215/8х = 2/12 + 43/1215/8х = 45/12х = 45/12 : 15/8х = 45/12 * 8/15х = 3/3 * 2/1х = 2--------------------------------( 1 7/8 * 2 - 3 7/12) * 4 4/5 = 0,8(15/8 * 2 - 43/12) * 24/5 = 0,8(15/4 - 43/12) * 24/5 = 0,8(45/12 - 43/12) * 24/5 = 0,82/12 * 24/5 = 0,82/1 * 2/5 = 0,84/5 = 0,80,8 = 0,8 5 2/3 : 1/3 - 1 7/12 * 24/19 + (1 1/2) ³ : (1/4)² = 17/3 : 1/3 - 19/12 * 24/19 + (3/2 * 3/2 * 3/2) : (1/4 * 1/4) = 17/3 * 3/1 - 19/12 * 24/19 + 27/8 : 1/16 = 17 - 2 + 27/8 * 16/1 = 17 - 2 + 54 = 69