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The GCF of 12, 15, and 18 is 3.
The prime factorization of these numbers are as follows:
18 = 2 x 3 x 3
15 = 3 x 5
12 = 2 x 2 x 3
The only factor that appears in all three prime factorization is 3, so 3 is the greatest common factor.
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∙ 6y ago
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