Помогите решить фоткой​

Ответ:

14/15: 7/1014/15 10/72/3 2/1 4/3 = 1 1/3

14/15 21 14/15 1/21 2/15 1/3 2/45

14/15 1 5/7 = 14/15: 12/7=14/15 7/12 7/15 7/6 = 49/90

14/15 2/714/15 7/27/15 7/149/15 3 4/15

7/10: 3/8 7/10 8/37/5 4/3=28/15=1 13/15

21: 3/8 21 8/37 8/156/1=56

1 5/7: 3/8 12/78/34/78/132/7=4 4/7

2/7: 3/82/7* 8/3 = 16/21