How do you combine like terms in #-4( k - 3) + 3( 9k + 9)#?

1 Answer
Apr 16, 2018

17k + 9

Explanation:

First, you simplify the problem by multiplying it out.
#−4(k−3)+3(9k+9)#
it would be
#-4(k) + -4(-3) + 3(9k) +3(9)#
#-4k+ -12 +21k+21#
Afterwards, you combine like terms.
#-4k+21k = 17k#
#-12+21= 9#
So, your answer would be:
#17k + 9#

That's it! Remember to keep on learning!
- Alana R.