fungsi komposisi (fog)(x) = 4 x -6 dan fungsi f(x) 2 x -2. berapakah g(x)? [tex][/tex]

(fog)(x) = 4x - 6
f(x) = 2x - 2

maka
(fog)(x) = 4x - 6
f(g(x)) = 4x - 6
2g(x) - 2 = 4x - 6
2g(x) = 4x - 6 + 2
2g(x) = 4x - 4
g(x) = 4x/2 - 4/2
g(x) = 2x - 2

fog(x) =4
f[g(x)]=4
2[g(x)]-2=4
2[g(x)]=4+2
g(x)=6/2=3