3/4
Пошаговое объяснение:
1) 2 2/5 * 5/6 = 12/5 * 5/6 = 2
2) 3/4 * 1 2/3 = 3/4 * 5/3 = 5/4 = 1 1/4
3) 2 - 1 1/4 = 1 4/4 - 1 1/4 = 3/4
3/4
Пошаговое объяснение:
1) 2 2/5 * 5/6 = 12/5 * 5/6 = 2
2) 3/4 * 1 2/3 = 3/4 * 5/3 = 5/4 = 1 1/4
3) 2 - 1 1/4 = 1 4/4 - 1 1/4 = 3/4