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3 = 3 x 1

6 = 3 x 2

21 = 3 x 7

51 = 3 x 17

'3' is a common factor throughout.

Hence

3 x 1 x 2 x 7 x 17 = 714 Is the LCM

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lenpollock

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10mo ago

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714

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Wiki User

11y ago
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Q: What is the LCM of 3 6 21 and 51?
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