Question

What is the greatest common factor of 30 and 45

Answer 1

So to find the Greatest Common factor we need to list the factors of 30 and 45.

30: 1,2,3,5,6,15,30
45: 1,3,5,9,15,45

As you can see the greatest factor of BOTH of them is 15 so The Greatest Common Factor of 30 and 45 is 15! Hope I helped you with your question! Have a great day! =)

Answer 2

when you find the (gcf) you start like putting each others factors together trying to see, if there are any same numbers, you keep piling, and when you come up to the biggest you can get up to, then that is your answer! if you do this one correctly, you should get the answer as 15
the answer would be 15.
Hope that this would help you! =)