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The LCM of 21 and 54 is 378.
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Find least common multiple (LCM) of: 42 & 108 63 & 162 7 & 18 105 & 270 147 & 378 42 & 54 21 & 108 63 & 54 21 & 162 105 & 54 21 & 270 147 & 54 21 & 378
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