Question #14e44

1 Answer
DeveloperLuke
Aug 29, 2017

The GCF is 1.

Explanation:

1) Find all the factors of both numbers
2) Find the greatest common factor that both numbers share
(e.g. 12&8 both have a common factor of 4 which is the greatest factor that they both share)

17 is a prime number and 17 is not a factor of 21 so the only factor that they both share would be 1.

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