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The greatest common factor is 9 because 18 is divisible by 9 and so is 45. It can not be greaater than half of 18 and 45 is not divisible by 18.

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Q: What ia the greater common factor of 18 and 45?
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What is the common factor of 18 and 45?

The greatest common factor of 18 and 45 is 9.


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Do 18 and 45 have a common factor for LCM?

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What is the greatest common factor to 18 and 45?

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