The GCF is 7.
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The greatest common factor of 42, 77 and 84 is 7.
The GCF is 7.
GCF(7, 42) = 77 = 7*1 and 42 = 7*6 So 7 + 42 = 7*(1 + 6).
The GCF is 7.
Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42Factors of 77: 1, 7, 11, 77Factors of 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84GCF (42, 77, 84) = 7