Пошаговое объяснение:
3 1/2 + 1 5/6 = 3 3/6 + 1 5/6 = 4 8/6 = 5 2/6 = 5 1/3
4 2/5 + 9 3/7 = 4 14/35 + 9 15/35 = 13 29/35
8 3/4 + 2 7/8 = 8 6/8 + 2 7/8 = 10 13/8 = 11 5/8
2 3/8 + 1 5/6 = 2 9/24 + 1 20/24 = 3 29/24 = 4 5/24
6 1/5 + 1 2/3 = 6 3/15 + 1 10/15 = 7 13/15
4 3/8 + 8 1/2 = 4 3/8 + 8 4/8 = 12 7/8
1)5 
2)13
3)11
4)
5)
Пошаговое объяснение:
