Question

(2/15+7/12)*30/43-2:2 1/2*5/32

Answer 1

(2/15 + 7/12) * 30/43 - 2 : 2 1/2 * 5/32 = 3/8

1) 2/15 + 7/12 = 8/60 + 35/60 = 43/60

2) 43/60 * 30/43 = 30/60 = 1/2

3) 2 : 2 1/2 = 2 : 5/2 = 2 * 2/5 = 4/5

4) 4/5 * 5/32 = 4/32 = 1/8

5) 1/2 - 1/8 = 4/8 - 1/8 = 3/8

Ответ: 3/8.