How do you use the distributive property to simplify 3k(-xy+-5)?

1 Answer
Aug 10, 2015

3k(-xy +- 5) = -3kxy +- 15k

Explanation:

The distributive property (of multiplication over addition or subtraction) says:
color(white)("XXXX")a(b+-c) = ab+-ac

For the given expression: 3k(-xy+-5)
a=3kcolor(white)("XXXX")b=(-xy)color(white)("XXXX")c=5

So
color(white)("XXXX")3k(-xy +- 5) = -3kxy +- 15k