Ответ:

1 3/4

Пошаговое объяснение:

1) 2 5/22 * 1 4/7 = 49/22 * 11/7 = 7/2 * 1/1 = 7/2 = 3 1/2

2) 5 - 3 1/2 = 4 2/2 - 3 1/2 = 1 1/2

3) 2 5/8 : 1 1/2 = 21/8 : 3/2 = 21/8 * 2/3 = 7/4 * 1/1 = 7/4 = 1 3/4

Ответ:  1 3/4 або 1,75

Пошаговое объяснение:

2 5/8 : (5 - 2 5/22 * 1 4/7) = 1 3/4

1) 2 5/22 * 1 4/7 = 49/22 * 11/7 = 7/2  = 3 1/2

2) 5 - 3 1/2 = 4 2/2 - 3 1/2 = 1 1/2

3) 2 5/8 : 1 1/2 = 21/8 : 3/2 = 21/8 * 2/3 = 7/4 = 1 3/4