1)3/7×1/2 2) 2/3×5/7 3) 9/10×1 4)2:2/5 5)1/9:1/3 6)2/5×2 7)1/2×1/5 8) 4/7÷2 9)2/3×1/4 10)3/5÷1 11)13/14÷0 12)1/7÷2/3 13)1÷1/5 14)5/6×6 15)0÷8/9​

Ответ:↓↓↓

1) 3/7 × 1/2 = 3/14

2) 2/3 × 5/7 = 10/21

3) 9/10 × 1 = 9/10

4) 2 ÷ 2/5 = 2 × 5/2 = 5

5) 1/9 ÷ 1/3 = 1/9 × 3/1 = 3/9 = 1/3

6) 2/5 × 2 = 4/5

7) 1/2 × 1/5 = 1/10

8) 4/7 ÷ 2 = 4/7 × 1/2 = 4/14 = 2/7

9) 2/3 × 1/4 = 2/12 = 1/6

10) 3/5 ÷ 1 = 3/5

11) 13/14 ÷ 0 = (Ділення на нуль неможливе)

12) 1/7 ÷ 2/3 = 1/7 × 3/2 = 3/14

13) 1 ÷ 1/5 = 1 × 5/1 = 5

14) 5/6 × 6 = 30/6 = 5

15) 0 ÷ 8/9 = 0 × 9/8 = 0

Надеюсь помогла