Пошаговое объяснение:

№1

1) 16 1/2 - 9 7/9 = 16 9/18 - 9 14/18 = 15 27/18 - 9 14/18 = 6 13/18

2) 6 13/18 * 18/33 = 121/18 * 18/33 = 11/1 * 1/3 = 11/3 = 3 2/3

3) 3 2/3 + 0,5 = 3 2/3 + 5/10 = 3 20/30 + 15/30 = 3 35/30 = 4 5/30 = 4 1/6

№2

1) 0,5 * 3 1/5 = 5/10 * 16/5 = 1/5 * 8/1 = 8/5 = 1 3/5

2) 2 - 1 1/7 = 1 7/7 - 1 1/7 = 6/7

3) 3 1/2 * 6/7 = 7/2 * 6/7 = 1/1 * 3/1 = 3/1 = 3

4) 1 3/5 + 3 = 4 3/5