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Anonymous
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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The LCM is 21.
The Least Common Multiple (LCM) for 3 21 is 21.
The LCM is 798.
The LCM is 2100.
The LCM is 441.