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The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.

The prime factors of 35 are 5 and 7.

The prime factors of 42 are 2, 3, and 7.

The common prime factors are a single 7, so the greatest common factor is 7.

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12y ago
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15y ago

The greatest common factor of 42 and 35 is 7.

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12y ago

7

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Q: What is the greatest common factor of 35 and 42?
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