Помогите пожалуйста

Пошаговое объяснение:

5/24 * 8/9 * 3/15 = 5/3 * 1/9 * 3/15 = 5/3 * 1/3 * 1/15 = 5/135 = 1/27

13 1/2 * 1 1/2 * 4/9 = 27/2 * 3/2 * 4/9 = 27/2 * 1/1 * 2/3 = 27/2 * 2/3 = 9/1 * 1/1 = 9/1 = 9

15/16 : 5/8 : 9/10 = 15/16 * 8/5 * 10/9 =

3/2 * 1/1 * 10/9 = 3/2 * 10/9 =

1/1 * 5/3 = 5/3 = 1 2/3