Answer
$\log_519$ or $\frac{\log19}{\log7}$ or $\frac{\ln19}{\ln7}$
Work Step by Step
Solve the exponential equation as a logarithm in the three forms shown in the example.
The forms are the log base x of y and the mathematical ways to find the log base x of y using the fraction with the common or natural log y over the common or natural log x.
$\log_519$ or $\frac{\log19}{\log7}$ or $\frac{\ln19}{\ln7}$