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3 x 5 = 15

3 x 7 = 21

3 x 5 x 7 = 105, the LCM

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Q: What is the LCM of 15 and 21 using prime factorization?
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Lcm of 15 and 21 using prime factorization?

It is 105 bacause 3*5*7 = 105


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