Answer:
It's C) -6y
Step-by-step explanation:
I know someone already answered but I figured I could explain since it looks like you are getting a little confused. The reason it's not A is because its
-5 + 5 which is zero. So it gets rid of x so your just left with -6y. If it was
5x+5x then it would 10x but the negative makes it 0
