Помогите пожалуста № 367

Question

Помогите пожалуста № 367

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Answer 1

1. 1/9, 2/9, 5/9, 7/9
2. 13/14, 13/45, 13/58, 13/100
3. 2/3, 2/5, 2/6, 2/12
4. 5/21, 7/21, 11/21, 20/21
5. 5/9, 7/11, 12/16, 20/24
6. 1/2, 3/6, 5/10, 7/14
7. 1/6, 5/10, 11/16, 15/20
8. 1/3, 3/9, 4/12, 5/15