Question #14e44
1 Answer
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.