Ответ:

Пошаговое объяснение:

1) 4 1/5 : 7/15 : 1/3 = 27

1) 4 1/5 : 7/15 = 21/5 : 7/15 = 21/5 * 15/7 = 3/1 * 3/1 = 9/1 = 9

2) 9 : 1/3 = 9 * 3 = 27

2) 4 1/5 : ( 7/15 : 1/3 ) = 3

1) 7/15 : 1/3 = 7/15 * 3/1 = 7/5 * 1/1 = 7/5 = 1 2/5

2) 4 1/5 : 1 2/5 = 21/5 : 7/5 = 21/5 * 5/7 = 3/1 * 1/1 = 3/1 = 3

3) ( 5 8/9 : 1  17/36 + 1 1/4 ) : 4 1/5 = 1 1/4

1) 5 8/9 : 1 17/36 = 53/9 : 53/36 = 53/9 * 36/53 = 1/1 * 4/1 = 4/1 = 4

2) 4 + 1 1/4 = 4/1 + 5/4 = 16/4 + 5/4 = 21/4 = 5 1/4

3) 5 1/4 : 4 1/5 = 21/4 : 21/5 = 21/4 * 5/21 = 1/4 * 5/1 = 5/4 = 1 1/4