8 17/24
Пошаговое объяснение:
12 3/4 - 6 7/8 + 4 1/2 - 1 2/3
1) 12 3/4 - 6 7/8 = 12 6/8 - 6 7/8 = 11 14/8 - 6 7/8 = 5 7/8
2) 5 7/8 + 4 1/2 = 5 7/8 + 4 4/8 = 10 3/8
3) 10 3/8 - 1 2/3 = 10 9/24 - 1 16/24 = 9 33/24 - 1 16/24 = 8 17/24
