Question 883209
{{{3^(x+1)=4^(x-1)}}}
{{{3^(x)*3^1=4^(x)*4^(-1)}}}
{{{3*3^(x)=4^(x)/4}}}
{{{3^x/4^x=1/12}}}
{{{(3/4)^(x)=1/12}}}
{{{x=log((3/4),(1/12))}}}
or approximately,
{{{x=8.64}}}