Respuesta :

Answer:

if you use calculator soup the answer is there :D

Step-by-step explanation:

answer is 3y²-9y+4

Step-by-step explanation:

first remove the brackets so

7y²-7y+7-4y²-2y-3

so

7y²-4y²-7y-2y+7-3

so u will get

3y² - 9y + 4

I hope this helped you