Respuesta :

XSadness
Hello.

The answer is 

-12y

Combine Like Terms:=6y+−6y+−12y=(6y+−6y+−12y)=−12y

Have a nice day
randomuser0w0
The answer is -12y

Explanation:
Since all the numbers have a common variable you can just add all of them together.
6y - 6y = 0
0 - 12y = -12y