2. Вычислите.
(2/5+3/4)÷на 1 целые2/5+(3целых5/6-1целая1/3)*4

113  

Пошаговое объяснение:

1. 2/5 + 3/4 = 6/20 = 3/10

2. 3 целых 5/6 - 1 целая 1/3 = 23/6 - 4/3² = 23/6 - 8/6 = 15/6 = 5/2 = 2 целых 1/2

3. 3/10 ÷ 1 целую 2/5 = 3/10 ÷ 7/5 = 3/10 × 5/7 = 15/70 = 3/14

4. 2 целых 1/2 × 4 = 5/2 × 4/1 = 20/2 = 10

5. 3/14 + 10¹⁴ = 3/14 + 140/14 = 143/14 = 10 целых 3/14