Вычислите:
(3 1/3+5 1/6)×2/5-2 3/4÷(1 1/2-2/5)+5 3/10
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(3 1/3 + 5 1/6) × 2/5 - 3/4 ÷ (1 1/2 - 2/5) + 5 4/10.

1) 3 1/3 + 5 1/6 =8 1/2

2) 1 1/2 - 2/5 = 1 1/10

3) 8 1/2 × 2/5 = 3 2/5

4) 2 3/4 ÷ 1 1/10 = 2 1/2

5) 8 1/3 - 2 1/3 = 3 4/7

6) 3 4/7 + 5 3/10 = 8 61/70

ответ 8 61/70

а) (3 1/3 + 5 1/6) × 2/5 -2

1) 3 1/3 + 5 1/6 = 8 1/2

2) 8 1/2 × 2/5 = 3 2/5

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

ответ 1 2/5

б) 3/4 ÷ (1 1/2 - 2/5) + 5 3/10

1) 1 1/2 - 2/5 = 1 1/10

2) 3/4 ÷ 1 1/10 = 15/22

3) 15/22 + 5 3/10 = 5 54/55

ответ 5 54/55