Question 1069226
{{{f(x)=1/(3x)}}}
{{{g(x)=2/x-1}}}
.
.
.
{{{f(g)=1/(3(2/x-1))=1/(6/x-3)=x/(6-3x)}}}
.
.
.
{{{g(f)=2/(1/(3x))-1=6x-1}}}
.
.
.
{{{f(f)=1/(3(1/(3x)))=x}}}