How do you simplify -c (3b - 7a)−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"distributive law
rArrcolor(red)(-c)(3b-7a)⇒−c(3b−7a)
=(color(red)(-c)xx3b)+(color(red)(-c)xx-7a)=(−c×3b)+(−c×−7a)
=-3bc+7ac=7ac-3bc=−3bc+7ac=7ac−3bc
