Question

помогите вычислить по действиям:
-3 1/2 * 2/5 - 3/8 + 1 * 3/10

Answer 1

-3 1/2 * 2/5 - 3/8 + 1 * 3/10 
1) -3 1/2 * 2/5 = - 7/2 * 2/5 = - 7/5 = -1 2/5
2) 1 * 3/10 = 3/10
3) -1 2/5 - 3/8 = -7/5 - 3/8 = -56/40 - 15/40 = - 71/40
4) - 71/40 + 3/10 = -71/40 + 12/40 = 59/40 = 1 19/40

Ответ: 1 19/40