вычислить:

39 5/6 + 12 5/9 = 39 + 12 + 5/6 + 5/9 = 51 + 15/18 + 10/18 = 51 + 25/18 = 52 7/18

36 5/7 + 12 7/8 = 36 + 12 + 5/7 + 7/8 = 48 + 60/56 + 49/56 = 48 + 109/56 = 50 53/56

Ответы:
39 5/6 + 12 5/9 = 52 7/18
36 5/7 + 12 7/8 = 50 53/56