Ответ:

Пошаговое объяснение:

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

2) = 12/14 + 5/14 = 17/14 = 1 3/14

3) = 8/12 + 7/12 = 15/12 = 1 3/12 = 1 1/4

4) = 16/20 + 3/20 = 19/20

5) = 8/18 + 7/18 = 15/18 = 5/6

6) = 27/30 + 8/30 = 35/30 = 1 5/30 = 1 1/6

7) = 35/42 + 9/42 = 44/42 = 1 2/42 = 1 1/21

8) = 15/36 + 2/36 = 17/36

9) = 3/24 + 6/24 = 9/24 = 3/8

10) = 9/12 + 2/12 = 11/12