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The LCM of 20 and 57 is 1140.
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Find least common multiple (LCM) of: 40 & 114 60 & 171 100 & 285 140 & 399 40 & 57 20 & 114 60 & 57 20 & 171 100 & 57 20 & 285 140 & 57 20 & 399
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