Question 931581
f(x)=2x+4/3x-4 
{{{y = (2x+4)/(3x-4)}}}
........
{{{x = (2y+4)/(3y-4)}}}
x(3y-4) = 2y + 4
3yx - 4x = 2y + 4
3yx - 2y = 4x+4
y(3x-2) = 4x + 4
.........
y = {{{(4x+4)/(3x-2)}}}
{{{f^(-1) = (4x+4)/(3x-2)}}}