jika f(x)=2x-3dan g(x) 1per 3x+1maka fog=..,,,,,,......

Perbaiki Tulisanya ya
f(x) = 2x-3
g(x) = 1 / 3x+1

(fog) (x) = f(g(x))
= 2(g(x)) - 3
= 2( 1 / 3x + 1 ) - 3
= 2-3(3x+1) /3x+1
= 2-9x-3 / 3x+1
= -1-9x / 3x+1

Solved

(fog)(x)=f(g(x))
           =f(1/3x+1)
           =2(1/3x+1)-3
           =(2/3x+1)-3
           =(2-3(3x+1)/3x-1)
           =2-9x-3/3x-1
           =-9x-1/3x-1