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The LCM of 42 and 4 is 84.
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Find least common multiple (LCM) of: 84 & 8 21 & 2 126 & 12 210 & 20 294 & 28 84 & 4 42 & 8 126 & 4 42 & 12 210 & 4 42 & 20 294 & 4 42 & 28
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