Question 314201
{{{log(2,(7x))+log(2,(x))=3}}}
{{{log(2,(7x^2))=3}}}
{{{7x^2=2^3}}}
{{{7x^2=8}}}
{{{x^2=8/7}}}}
{{{x=sqrt(8/7)}}}
{{{x=2*sqrt(2/7)}}}
Note the negative square root is not a solution since the log function requires non-negative values. 
{{{x=1.07}}} to the nearest hundredth