Пошаговое объяснение:

1/2 + 6 3/7 = 7/14 + 6 6/14 = 6 13/14

6 + 4 9/11 = 10 9/11

2/9 + 1 8/15 = 10/45 + 1 24/45 = 1 34/45

1/14 + 9 3/7 = 1/14 + 9 6/14 = 9 7/14 = 9 1/2

7 1/12 + 6 = 13 1/12

5/7 + 3 1/4 = 20/28 + 3 7/28 = 3 27/28

Ответ:

Пошаговое объяснение:

1) 1/2 + 6 3/7 = 7/14 + 6 6/14 = 6 13/14

2) 6 + 4 9/11 = 10 9/11

3) 2/9 + 1 8/15 = 10/45 + 1 24/45 = 1 34/45

4) 1/14 + 9 3/7 = 1/14 + 9 6/14 = 9 7/14 = 9 1/2 = 9,5

5) 7 1/12 + 6 = 13 1/12

6) 5/7 + 3 1/4 = 20/28 + 3 7/28 = 3 27/28