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What is the LCM of 21 and 13?

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βˆ™ 2012-09-24 20:53:10

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sicne 13 is prime it simple is 13*21=273

or you can factor it as well and see

13=1*13

21=3*7

LCM=3*7*13=273

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βˆ™ 2012-09-24 20:53:10
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