Question 963407

{{{log(2,(5x))=4}}}.........change to the base {{{10}}}

{{{log((5x))/log(2)=4}}}

{{{log((5x))=4log(2)}}}

{{{log((5x))=log(2^4)}}}

{{{log((5x))=log(16)}}}...........if log same, then

{{{5x=16}}}

{{{x=16/5}}} exact solution (and it is not an irrational number)