Verified answer

Пошаговое объяснение:

1) 8 1/4 - 5 1/2 = 8 1/4 - 5 2/4 = 7 5/4 - 5 2/4 = 2 3/4

2) 7 4/15 - 4 3/5 = 7 4/15 - 4 9/15 = 6 19/15 - 4 9/15 = 2 10/15 = 2 2/3

3) 12 2/5 - 5 3/4 = 12 8/20 - 5 15/20 = 11 28/20 - 5 15/20 = 6 13/20

4) 6 3/10 - 4 7/15 = 6 9/30 - 4 14/30 = 5 39/30 - 4 14/30 = 1 15/30 = 1 1/2

5) 9 5/18 - 1 7/12 = 9 10/36 - 1 21/36 = 8 46/36 - 1 21/36 = 7 25/36

6) 8 7/15 - 2 17/18 = 8 42/90 - 2 85/90 = 7 132/90 - 2 85/90 = 5 47/90

7) 8 2/3 - 7 5/7 = 8 14/21 - 7 15/21 = 7 35/21 - 7 15/21 = 20/21

8) 7 3/16 - 1 5/24 = 7 9/48 - 1 10/48 = 6 57/48 - 1 10/48 = 5 47/48