Ответ:

1)

7целых 1/7 * 3целых 1/2 = 15/7 * 7/2 = 15/1 * 1/2 = 15/2 = 7целых 1/2

2)

10целых 1/22 * 1целая 1/3 = 221/22 * 4/3 = 221/11 * 2/3 = 442/33 = 13целых 13/33

3)

1целая 7/10 * 3целых 1/3 = 17/10 * 10/3 = 17/1 * 1/3 = 17/3 = 5целых 2/3

4)

8целых 2/3 * 1целая 2/13 = 26/3 * 15/13 = 2/1 * 5/1 = 10/1 = 10