( x + 1/3 - 1/4 ) : ( 2 + 1/6 - 1/4 ) = 7/46
( x + 1/3 - 1/4 ) : ( 13/6 - 1/4 ) = 7/46
( x + 1/3 - 1/4 ) : 23/12 = 7/46
x + 1/3 - 1/4 = 7/46 x 23/12
x + 1/3 - 1/4 = 7/24
x + 1/3 = 7/24 + 1/4
x + 1/3 = 13/24
x = 13/24 - 1/3
x = 5/24
(x + 1/12) : 23/12 = 7/46
(x+1/12) = 7/46 . 23/12
x + 1/12 = 7/24
x = 7/24 - 1/12
x = 5/24