84 + 28 = (12 x 7) + (4 x 7) = 16 x 7 = 112
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Since 7 is a factor of 28, it is automatically the GCF of 7 and 28The Greatest Common Factor (GCF) of 28 and 7 is 7.
The GCF of 15 and 28 is 1. GCF stands for greatest common factor.
The GCF of 28 and 16 is 4.
The GCF is 14.