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Anonymous
112 = 2 x 2 x 2 x 2 x 7; 140 = 2 x 2 x 5 x 7.
The common factors are 2 x 2 x 7 so the HCF is 28
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The GCF is 20.
gcf(133, 140) = 7
GCF of 42 and 112 and 105 is 7.
The GCF is 56.
The Greatest Common Factor (GCF) of 140, 105, and 70 is 35.