How do you simplify 4(q-3r)?

May 2, 2016

$= 4 q - 12 r$
$\textcolor{g r e e n}{4} \left(q - 3 r\right)$
$= \textcolor{g r e e n}{4} \cdot \left(q\right) + \textcolor{g r e e n}{4} \cdot \left(- 3 r\right)$
$= 4 q - 12 r$