# How do you simplify (10x + 15) + (4x + 10)?

$\left(10 x + 15\right) + \left(4 x + 10\right) = \textcolor{red}{14 x + 25}$
$\left(10 x + 15\right) + \left(4 x + 10\right)$
$\textcolor{w h i t e}{\text{XXX}} = 10 x + 4 x + 15 + 10$
$\textcolor{w h i t e}{\text{XXX}} = 14 x + 25$