Respuesta :

-6y-6 is the answer for this question

charstar
3y-6+7y-4y
First we need to group like terms (note that the sign in front of the number is part of the number)
so it becomes:
3y+7y-4y -6
Now we combine like terms:
3y+7y=10y
10y-4y=6y

So the whole thing becomes 6y-6

Hope this helps :)