Ответ:
5
Пошаговое объяснение:
1) 2 3/4 : 1 1/10 = 11/4 : 11/10 = 11/4 * 10/11 = 5/2
2) 5/2 + 3 1/3 = 15/6 + 3 2/6 = 3 17/6 = 5 5/6
3) 2/5 * 3 1/3 = 2/5 * 10/3 = 4/3 = 1 1/3
4) 2 1/2 - 1 1/3 = 2 3/6 - 1 2/6 = 1 1/6
5) 5 5/6 : 1 1/6 = 35/6 : 7/6 = 35/6 * 6/7 = 5
6) 5 : 5/7 = 7
7) 2 1/6 + 4 1/2 = 2 1/6 + 4 3/6 = 6 4/6 = 6 2/3
8) 6 2/3 * 3/8 = 20/3 * 3/8 = 5/2
9) 2 3/4 - 1 1/2 = 2 3/4 - 1 2/4 = 1 1/4
10)5/2 : 1 1/4 = 5/2 : 5/4 = 5/2 * 4/5 = 2
11) 7 - 2 = 5