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The factors of 63 are:

1, 3, 7, 9, 21, 63

The factors of 135 are:

1, 3, 5, 9, 15, 27, 45, 135

The Greatest Common Factor:

GCF = 9

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8y ago
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8y ago

The factors of 60 are:

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

The factors of 70 are:

1, 2, 5, 7, 10, 14, 35, 70

The Greatest Common Factor:

GCF = 10

This answer is:
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Q: How do you work out the hcf of 60 and 70?
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