Question

помогите пожалуйста​

Answer 1

Ответ:

2) 6 2/3  4) 36/21 (сократи)

Пошаговое объяснение:

2) 1 = 9/9

9/9 - 4/9 = 5/9

1/3 и 1/4 = 4/12 и 3/12

4/12 - 3/12 = 1/12

5/9 : 1/12 = 5/9 * 12/1 = 20/3 = 6 2/3

4)5/7 - 2/3 = 15/21 - 14/21 = 1/21

4/9 - 5/12 = 16/36 - 15/36 = 1/36

1/21 : 1/36 = 1/21 * 36/1 = 36/21