Ответ:

смотри на фото

Пошаговое объяснение:

постав лайк пж

Пошаговое объяснение:

№3

1) 2 1/4 + 4 5/6 = 2 6/24 + 4 20/24 = 6 26/24 = 7 2/24 = 7 1/12

2) 7 1/12 : 3 2/5 = 85/12 : 17/5 = 85/12 * 5/17 = 5/12 * 5/1 = 25/12 = 2 1/12

3) 3/4 : 3/5 = 3/4 * 5/3 = 1/4 * 5/1 = 5/4 = 1 1/4

4) 2 1/12 - 1 1/4 = 2 1/12 - 1 3/12 = 1 13/12 - 1 3/12 = 10/12 = 5/6

№5

1) 4 2/5 * 5/8 = 22/5 * 5/8 = 11/1 * 1/4 = 11/4 = 2 3/4

2) 12 3/7 : 4 5/6 = 87/7 : 29/6 = 87/7 * 6/29 = 3/7 * 6/1 = 18/7 = 2 4/7

3) 8 1/2 : 14 = 17/2 * 1/14 = 17/28

4) 2 3/4 + 2 4/7 = 2 21/28 + 2 16/28 = 4 37/28

5) 4 37/28 - 17/28 = 4 20/28 = 4 5/7

6) 4 5/7 : 33/56 = 33/7 * 56/33 = 1/1 * 8/1 = 8/1 = 8