1) -2 + 1 целая 7/8 = -1 целая 1/82) -1 + 2 целых 1/9 = 1 целая 8/94) -5/7 + 4/7 = -1/75) -5/8 + 7/8 = 2/8 = 1/4
1) -2 + 1 целая 7/8 = -1 целая 1/8
2) -1 + 2 целых 1/9 = 1 целая 8/9
4) -5/7 + 4/7 = -1/7
5) -5/8 + 7/8 = 2/8 = 1/4