# What are the factors of 18x-45?

$9 \left(2 x - 5\right)$
$9$ is a factor of both 18 and 45 so this can be factored to:
$\left(9 \cdot 2 x\right) - \left(9 \cdot 5\right) \to$
$9 \left(2 x - 5\right)$