find invers function of the one to one function

To make typing easier, I'm going to replace 'f(x)' with 'y':

Problem:  if  y = (x + 4)³  then find the inverse:

First, exchange the variables 'x' and 'y':  x  =  (y + 4)³

Second:  solve for y:                               x^(1/3)  =  y + 4

                                                               y  =  x^(1/3) - 4

Finally, replace y with f-1(x)   --->        f-1(x)  =  x^(1/3) - 4

Thanks a bunch! I get it now :)