Verified answer

Пошаговое объяснение:

1) 5 5/7 + 1 3/4 = 5 20/28 + 1 21/28 = 6 41/28 = 7 13/28

2) 8 1/2 - 3 5/7 = 8 7/14 - 3 10/14 = 7 21/14 - 3 10/14 = 4 11/14

3) 3 3/7 * 1 1/9 = 24/7 * 10/9 = 8/7 * 10/3 = 80/21 = 3 17/21

4) 5/8 * 4/7 = 5/2 * 1/7 = 5/14

5) 25/31 * 4 = 100/31 = 3 7/31

6) 17/46 : 17/4 = 17/46 * 4/17 = 1/23 * 2/1 = 2/23

7) 24 : 4/5 = 24 * 5/4 = 6 * 5/1 = 30/1 = 30

8) 1 7/6 : 7/3 = 13/6 * 3/7 = 13/2 * 1/7 = 13/14