Verified answer

Ответ:

1) 8 9/10 - x = 4 5/6

x = 8 9/10 - 4 5/6

x= 4 1/15

2) 9/14 + (x-3/7)=23/28

x-3/7 = 23/28 - 9/14

x-3/7= 5/28

x=5/28+3/7

x=17/28

Пошаговое объяснение:

8 9/10 - х = 4 5/6

х = 8 9/10 - 4 5/6

х = 8 27/30 - 4 25/30

х = 4 2/30

х = 4 1/15

9/14 + ( х - 3/7) = 23/28

х - 3/7 = 23/28 - 9/14

х - 12/28 = 23/28 - 18/28

х - 12/28 = 5/28

х = 5/28 + 12/28

х = 17/28