Question 963407

can you help me on solving this logarithmic equation, and express irrational solutions in exact form 
log2(5x)=4
<pre>{{{log (2, 5x) = 4}}} ----- Logarithmic form
{{{5x = 2^4}}} -------- Exponential form
{{{5x = 16}}}
{{{x = 16/5}}}, or {{{highlight_green(x = 3.2)}}}