53 7/12
Пошаговое объяснение:
1) 8 1/3 × 9 = 25/3 × 9 = 75
2) 4 1/3 × 3 1/4 = 13/3 × 13/4 =169/12 = 14 1/12
3) 2 2/7 × 3 5/24 = 16/7 × 77/24 = 44/6 = 7 1/3
4)75 - 14 1/12 = 74 12/12 - 14 1/12 = 60 11/12
5) 60 11/12 - 7 1/3 = 53 7/12
