F(x) = 1 / 2x - 1 (F o g) (x) = x / 3x - 2 G(x) = ?

misal :
g(x) = a

f(x) = 1/(2x - 1)

(fog)(x) = x/(3x - 2)
1/(2a - 1) = x/(3x - 2)
2a - 1 = (3x - 2)/x
2a = 1 + (3x - 2)/x
2a = (x + 3x - 2)/x
a = (4x - 2)/(2x)
g(x) = (2x - 1)/x