find the prime factor 12 and 21
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The prime factorization of 12 is: 2 x 2 x 3.
The prime factorization of 21 is: 3 x 7.
The prime factors and multiplicities 12 and 21 have in common are: 3.
3 is the gcf of 12 and 21.
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The prime factorization of 12 =2 x 2 x 3.
The prime factorization of 21 =3 x 7.
The prime factors and multiplicities 12 and 21 have in common =3
3 is the gcf of 12 and 21.
Answer :gcf(12,21) = 3.
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