What is the gcf of 20,45x

Question

anonymous · Answer

5

timaashorty · Answer

GCF mean greatest common factor.

In order to find the greatest common factor is find the factors of each number. Remember that factors are numbers which can be multiplied together to get a product, in this case 45, and 20. 
All the factors of a number begin with 1 and end with the number. 

20: 1,2,4,5,10,20
45: 1,3,5, 9, 15,45

Now find out which one is the greatest factor that BOTH numbers have. That would be 5.

So your GCF would be five.

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anonymous · Answer

thanks what are the factors for 15r, 25

timaashorty · Answer

Factors:

15: 1, 3, 5,15
25: 1,5,25

Remember: to get the factors you need to know all the number that multiply into the product (15 or 25).