Question 927720
{{{log(x)-log(x+7)=-1}}}
{{{log(x/(x+7))=-1}}}
{{{x/(x+7)=10^-1}}}
{{{x/(x+7)=1/10}}}
{{{10x=x+7}}}
{{{10x-x=7}}}
{{{9x=7}}}
{{{highlight(x=7/9)}}}