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The common factor is 70.
Factors of 140 are 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, and 140

Factors of 210 are 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, and 210.

The GCF (greatest common factor) is 70

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8y ago

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