Verified answer

Ответ:

27/28

Пошаговое объяснение:

1) 5 6/11 - 3,5 = 5 6/11 - 3 5/10 = 5 6/11 - 3 1/2 =

5 12/22 - 3 11/22 = 2 1/22

2) 2,2 * 2 1/22 = 22/10 * 45/22 = 45/10 = 4 5/10 =

4 1/2

3) 9 - 4 1/2 = 8 2/2 - 4 1/2 = 4 1/2

4) 6 1/8 - 1,75 = 6 1/8 - 1 75/100 = 6 1/8 - 1 3/4 =

6 1/8 - 1 6/8 = 5 9/8 - 1 6/8 = 4 3/8

5) 4 3/8 : 4 1/2 = 27/8 : 9/2 = 27/8 * 2/9 = 3/4 * 1/1 = 3/4

6) 3/4 * 1 2/7 = 3/4 * 9/7 = 27/28