Answer:
7x+3y-7z+10
Step-by-step explanation:
You need to combine like terms.
First you do 9x-2x to get 7x
Then you put the rest of the problem together in alphabetical order first then regular numbers.
This would be x, y, z, and then 10
Lastly, you get 7x+3y-7z+10
Hope this helps!
