20-07-2015
Mathematics

contestada

Find the sum.
(-x - 2y - 4z) + (7x - 6y - 6z)

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20-07-2015

−x−2y−4z+7x−6y−6z

=−x+−2y+−4z+7x+−6y+−6z

Combine Like Terms:

=−x+−2y+−4z+7x+−6y+−6z

=(−x+7x)+(−2y+−6y)+(−4z+−6z)

=6x+−8y+−10z

[tex]\bold{6x - 8y -10z}[/tex]

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