g(x) = 2x/x+3,x tidak sama dengan 3,h(x)=3x-5 . (goh-' )(4)=??

h(x) = 3x - 5
y = 3x - 5
3x = y + 5
x = (y +5)/3
h-1(x) = (x + 5)/3
(g o h-1)(4) = g(h-1(4))
h-1(4) = (4 + 5)/3 = 3
g(h-1(4)) = g(3) = 2 . 3/(3 + 3) = 1