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The LCM of 21 and 2 is 42.
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Find least common multiple (LCM) of: 42 & 4 63 & 6 105 & 10 147 & 14 42 & 2 21 & 4 63 & 2 21 & 6 105 & 2 21 & 10 147 & 2 21 & 14
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