3 Составь программу действий и вычисли. 30 – 20 : 5 = 3 ⋅ 7 + 3 : 3 = 12 : (13 – 7) + 3 ⋅ 2 = 4 ⋅ (15 – 9) : 8 =

Разбираемся:

30 – 20 : 5 = 30 - 4 = 26

3 ⋅ 7 + 3 : 3 = 21 + 1 = 22

12 : (13 – 7) + 3 ⋅ 2 = 12 : 6 + 6 = 2 + 6 = 8

4 ⋅ (15 – 9) : 8 = 4 ⋅ 6 : 8 = 24 : 8 = 3

Ответ: 26, 22, 8, 3