Ответ:

х=1 1/7

Пошаговое объяснение:

9 2/15 - (3 5/14 + х) : 5 5/8 = 8 1/3

(3 5/14 + х) : 5 5/8 = 9 2/15 - 8 1/3

(3 5/14 + х) : 5 5/8 = 9 2/15 - 8 5/15

(3 5/14 + х) : 5 5/8 = 8 17/15 - 8 5/15

(3 5/14 + х) : 5 5/8 = 12/15

3 5/14 + х = 12/15 * 5 5/8

3 5/14 + х = 12/15 * 45/8

3 5/14 + х = 3/1 * 3/2

3 5/14 + х = 9/2

3 5/14 + х = 4 1/2

х = 4 1/2 - 3 5/14

х = 4 7/14 - 3 5/14

х = 1 2/14

х = 1 1/7