Ответ:

17 1/2

Пошаговое объяснение:

1) 4 1/2 * 2 2/9 = 9/2 * 20/9 = 1/1 * 10/1 = 10/1 = 10

2) 10 - 3 1/6 = 9 6/6 - 3 1/6 = 6 5/6

3) 11 5/7 : 6 5/6 = 82/7 : 41/6 = 82/7 * 6/41 = 2/7 * 6/1 = 12/7 = 1 5/7

4) 15 11/14 + 1 5/7 = 15 11/14 + 1 10/14 = 16 21/14 = 17 7/14 = 17 1/2