ada yg tau? [tex](fog)(x) = \frac{x + 5}{2x - 7} \\ g(x) =2x + 3 \\ f(x) = .....[/tex]

(fog) (x) = (x + 5) / (2x - 7)
f(g(x)) = (x + 5) / (2x - 7)
f(2x + 3) = (x + 5) / (2x - 7)
f(y) = ( (y - 3)/2 + 5) / (2 (y - 3)/2 - 7)
f(y) = ( (y + 7) / 2) / (y - 3 - 7)
f(y) = ((y + 7) / 2 ) / (y - 10)
f(y) = (y + 7) / (2y - 20)
f(x) = (x + 7) / (2x - 20)