How do you simplify #-9(y-7) #?

1 Answer
Rory
Jun 5, 2016

Use the distributive property to get #-9y +63# .

Explanation:

The distributive property means the you can change #a(b+c)# into #ab + bc#.

In your problem, that means you can multiple #-9y# by each #y# and #-7# and add them together.

#-9 * y = -9y# and #-9 * -7 = 63#

So, the simplified answer is #-9y + 63#

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