Question 840261
{{{log(3,x)-log(3,(x-5))=log(3,A)}}}
{{{log(3,x/(x-5))=log(3,A)}}}
{{{x/(x-5)=3^A}}}
{{{x=3^A(x-5)}}}
{{{x=3^A-5*3^A}}}
{{{x(1-3^A)=-5*3^A}}}
{{{x=(-5*3^A)/(1-3^A)}}}