ItsReal

Verified answer

Ответ:

2 9/14x - 1 17/21x = 1 1/9

111/42 x - 76/42x = 10/9

35/42 x = 10/9

x = 10/9 : 35/42

x = 10/9 • 42/35 = 2/3 • 14/7

x = 28/21 = 4/3 = 1 1/3