Question 194361
{{{Log[5](5^(4)) = x}}}
Recall the definition of a logarithm..."The logarithm (x) of a number ({{{5^4}}}) is the power to which the base (5) must be raised to equal that number.  So...
{{{5^x = 5^4}}} The bases are equal so the exponents are equal.
{{{highlight(x = 4)}}}