6 1/4*8-3 2/3*5 1/2+2 2/5*4 7/12

ответ:6 1/4 * 8 - 3 2/3 * 5 1/2 + 2 2/5 * 4 7/12 = 40 5/6

1) 6 1/4 * 8 = 25/4 * 8 = 25 * 2 = 50

2) 3 2/3 * 5 1/2 = 11/3 * 11/2 = 121/6 = 20 1/6

3) 2 2/5 * 4 7/12 = 12/5 * 55/12 = 55/5 = 11

4) 50 - 20 1/6 = 49 6/6 - 20 1/6 = 29 5/6

5) 29 5/6 + 11 = 40 5/6

Пошаговое объяснение: