Answer:
C5(3+7)
Explanation:
So, lets ingore the answers, and jsut try to break down 15+35
What can we take from both 15 and 35?
Well, 5 is the only one I can see in this.
So lets take 5 from this:
5(3 + 7)
We got 3 since 5x3 is 15, and we got 7 since 5x7 is 35.
So lets look at our answers and see if 5(3 + 7) is one of them
Well, looking at C, that is exactly 5(3 +7)
So c is our answer.
Hope this helps!