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The LCM of 21 and 400 is 8400.
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Find least common multiple (LCM) of: 42 & 800 63 & 1200 105 & 2000 147 & 2800 42 & 400 21 & 800 63 & 400 21 & 1200 105 & 400 21 & 2000 147 & 400 21 & 2800
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