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What is the LCM of 21 and 35 and 42?

Updated: 4/28/2022
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8y ago

Best Answer

Note that 21 x 2 = 42, so we really only need to look at 35 and 42.

So 7 x 5 = 35, and 7 x 6 = 42. There is a common factor of 7. So we have 7 x 5 x 6 = 210 is the LCM.

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Wiki User

10y ago
This answer is:
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Wiki User

8y ago

The LCM is 210.

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Q: What is the LCM of 21 and 35 and 42?
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