(8 5/27 - x) - 2 25/27 = 1 25/27

8 5/27 - x = 1 25/27 + 2 25/27

8 5/27 - x = 3 50/27

8 5/27 - x = 4 23/27

x = 8 5/27 - 4 23/27

x = 7 32/27 - 4 23/27

x = 3 9/27

x = 3 1/3

Ответ: 3 1/3