9 / 11 - x : 2 / 3 = 5 / 22
>= 9 / 11 - ( x : 2 / 3 ) = 5 / 22
>= 9 / 11 - 5 / 22 = x : 2 / 3
>= 13 / 22 = x : 2 / 3
>= x = 39 / 44
x : 2/3 = 9/11 - 5/22
x : 2/3 = 13/22
x = 13/22 * 2/3
x = 13/33
x :2/3=9/11-5/22 x :2/3=13/22 x =13/22 x 2/3 x =13/33
9/11 - 5/22 = x : 2/3
13/22 = x : 2/3
x = 13/22 x 2/3
x = 26/66 = 13/33