Найдите значение выражения 8/15* 1 3/8:(2/5+7/10)*(-1 1/2)​

8/15 · 1 3/8 : (2/5 + 7/10) · (-1 1/2) = -1

1) 2/5 + 7/10 = 4/10 + 7/10 = 11/10

2) 8/15 · 1 3/8 = 8/15 · 11/8 = 11/15

3) 11/15 : 11/10 = 11/15 · 10/11 = 10/15 = 2/3

4) 2/3 · (-1 1/2) = 2/3 · (-3/2) = -1

ответ: (-1).

1) 8/15×1 3/8=8/15×11/8=11/15

2)2/5+7/10=11/10

3)11/15÷11/10=11/15×10/11=2/3

4)2/3×-1 1/2=2/3×-3/2=-1