Question 61496
{{{7/(8^x) = 14}}}
{{{1/(8^x) = 14/7}}}
{{{1/(2^(3x)) = 2}}}
{{{2^(3x) = 1/2}}}
{{{2^(3x+1) = 1}}}

We know that "something" to the power "zero" is 1.

So, {{{3x+1 = 0}}}
or {{{3x= -1}}}
or {{{x= -1/3}}}