How do you simplify #6x + 2y - 7( 6x - 4y + 4z )#?

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Answer 1 · 2018-06-18T22:00:39

# -36x + 30y - 28z#

Given: #6x + 2y -7(6x - 4y + 4z)#

First distribute the #-7#:

#6x + 2y -7(6x) -7(-4y) -7(4z)#

#= 6x + 2y -42x + 28y - 28z#

Now add terms that are alike:

#= (6x - 42x) + (2y + 28y) -28z#

#= -36x + 30y - 28z#