(2 2/3*3/8-3/25*1/2):2/5
(2 2/3 * 3/8 - 3/25 * 1/2) : 2/5 = 2 7/20
1) 2 2/3 * 3/8 = 8/3 * 3/8 = 1
2) 3/25 * 1/2 = 3/50
3) 1 - 3/50 = 50/50 - 3/50 = 47/50
4) 47/50 : 2/5 = 47/50 * 5/2 = (47*1)/(10*2) = 47/20 = 2 7/20
Ответ: 2 целых 7/20.
Решите задачу: