Question 972756
Log x - log(x+7) = -1
?

What base?
{{{Log((x))-log((x+7))=-1}}}
{{{log((x/(x+7)))=-1}}}
{{{b^(-1)=x/(x+7)}}} for some unknown base b
{{{b=(x+7)/x}}}
{{{bx=x+7}}}
{{{bx-x=7}}}
{{{(b-1)x=7}}}
{{{highlight(x=7/(b-1))}}}