Question 838580
{{{highlight_green(highlight(g(x)<>7x+9))}}}.


You want to find the inverse of f(x) and call this inverse to be g(x).


The input of f being g must give x as the result.  

{{{f(g(x))=9(g(x))-7=x}}}
{{{9(g(x))=x+7}}}
{{{highlight(g(x)=(x+7)/9)}}}, and this should be to inverse of f(x).