Пошаговое объяснение:
3 1/2 + 1 5/6= 3 3/6 + 1 5/6 = 4 8/6 = 5 2/6 = 5 1/3
8 3/4 + 2 7/8 = 8 6/8 + 2 7/8 = 10 13/8 = 11 5/8
6 1/5 + 1 2/3 = 6 3/15 + 1 10/15 = 7 13/15
3 4/5 - 2 3/5 = 1 1/5
4 5/6 - 2 5/12 = 4 10/12 - 2 5/12 = 2 5/12
9 1/2 - 2 1/4 = 9 2/4 - 2 1/4 = 7 1/4
11 3/7 - 5 1/3 = 11 9/21 - 5 7/21 = 6 2/21
