Question 871249
{{{3+6e^(-2x)=7}}}
{{{6e^(-2x)=4}}}
{{{e^(-2x)=4/6=2/3}}}
{{{-2x=ln(2/3)}}}
{{{x=-(1/2)ln(2/3)}}}
{{{x=(1/2)ln(3/2)}}}