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Posted by on Sunday, March 30, 2008 at 2:38pm.

How do you find the LCM of 3 and 7?

  • math - , Sunday, March 30, 2008 at 2:51pm

    21

  • math - , Sunday, March 30, 2008 at 2:55pm

    reason for this is:

    multiples of 3 : 3,6,9,12,15,18,21,24,27
    multiples of 7 : 7,14,21,28

    multiple that is the lowest that both 3 and 7 have is the lowest common multiple (LCM)

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