# How do you simplify log_9 7x + log_9 x + log_9 5x?

${\log}_{9} 35 {x}^{3}$
Note that ${\log}_{k} a + {\log}_{k} b = {\log}_{k} a b$, we therefore have:
${\log}_{97} x + {\log}_{9} x + {\log}_{95} x = {\log}_{9} 35 {x}^{3}$