2/9 + х = 1/18 + 1/3
2/9 + x = 1/18 + 6/18
2/9 + x = 7/18
x = 7/18 - 2/9
x = 7/18 - 4/18
x = 3/18
x = 1/6
2/9 + х = 1/18 + 1/3
2/9 + x = 1/18 + 6/18
2/9 + x = 7/18
x = 7/18 - 2/9
x = 7/18 - 4/18
x = 3/18
x = 1/6