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To find the greatest common factor (gcf, for short), first factorize 21 and 14.

14 = 2 x 7

21 = 3 x 7

Since 1 and 7 are the only common factors of both 14 and 21, we call 7 the greatest common factor.

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โˆ™ 2012-04-24 04:41:04
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Q: Greatest common factor of 21 and 14?
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