How do you solve 30( g + 9) = 870?

Apr 6, 2018

 color(blue)(g = 20

Explanation:

$30 \left(g + 9\right) = 870$

$\left(g + 9\right) = {\cancel{870}}^{\textcolor{red}{29}} / \cancel{30}$

$g + 9 = 29$

g = 29 - 9 = color(blue)(20