7 - 5/12 = 84/12 - 5/12 = 79/12 или 6 целых 7/12.
6 1/8 - 2 3/8 = 49/8 - 19/8 = 30/8 = 15/4 или 3 целых 3/4.
8 4/13 - 5 8/13 = 108/13 - 68/13 = 40/13 или 3 целых 1/13.
7 - 5/12 = 84/12 - 5/12 = 79/12 или 6 целых 7/12.
6 1/8 - 2 3/8 = 49/8 - 19/8 = 30/8 = 15/4 или 3 целых 3/4.
8 4/13 - 5 8/13 = 108/13 - 68/13 = 40/13 или 3 целых 1/13.