# How do you simplify #-c (3b - 7a)#?

##### 1 Answer

Mar 25, 2017

#### Explanation:

Each term in the bracket must be multiplied by - c

This is referred to as the

#color(blue)"distributive law"#

#rArrcolor(red)(-c)(3b-7a)#

#=(color(red)(-c)xx3b)+(color(red)(-c)xx-7a)#

#=-3bc+7ac=7ac-3bc#