Question

Simplify

-2x - 2y - 2z + 5x - 2y - 4z​

Answer 1

Answer: 3x-4y-6z

Explanation:

First collect the like terms and you get:
-2x + 5x - 2y - 2y - 2z - 4z
Add similar elements:
3x - 2y - 2y - 2z - 4z
And you do it again and you get: 3x-4y-2z-4z
then just take away -4z from -2z and you get: 3x-4y-6z