Answer:
5(7y + 3)
Step-by-step explanation:
10y + 15 + 25y
= 5 x 2y = 10y
= 5 x 3 = 15
= 5 x 5y = 25y
= 5(2y + 3 +5y)
So, the answer is 5(7y + 3).
Hope this helps! :)
Also Symbolab is a good website/app to use it'll give the steps and answer.