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Anonymous
The factors of 28 are:
1, 2, 4, 7, 14, 28
The factors of 42 are:
1, 2, 3, 6, 7, 14, 21, 42
The common factors are:
1, 2, 7, 14
The Greatest Common Factor:
GCF = 14
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The GCF is 7.
The GCF is 14.