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Anonymous
The GCF of 15 and 28 is 1.
The factors of 15 are 1, 3, 5, and 15
The factors of 28 are 1, 2, 4, 7, 14, and 28
So the GCF of 15 and 28 is 1
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The factors of 15 are 1, 3, 5, and 15. The factors of 28 are 1, 2, 4, 7, 14, and 28. The GCF of 15 and 28 is 1.
The GCF of 28 and 15 is 1.