The GCF is 3.
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The word "GREATEST" is a superlative adjective and that means there can be only one.GCF(912, 21) = 3.
The GCF of that set is 1.
Alright, honey, the greatest common factor of 12 and 21 is 3. So, if you're looking to simplify things, just divide both numbers by 3 and you'll be good to go. Math doesn't have to be a headache, darling!
The factors of 9 are:1, 3, 9The factors of 13 are:1, 13The Greatest Common Factor (GCF) is:1
16 and 21