Verified answer

Пошаговое объяснение:

у - 7/12у = 4 1/6

12/12у - 7/12у = 4 1/6

5/12у = 25/6

у = 25/6 : 5/12

у = 25/6 * 12/5

у = 5/1 * 2/1

у = 10/1

у = 10

х - 9/16х = 5 1/4

16/16х - 9/16х = 5 1/4

7/16х = 21/4

х = 21/4 : 7/16

х = 21/4 * 16/7

х = 3/1 * 4/1

х = 12/1

х = 12