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The LCM of 640 and 84 is 13440.
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Find least common multiple (LCM) of: 1280 & 168 320 & 42 1920 & 252 3200 & 420 4480 & 588 1280 & 84 640 & 168 1920 & 84 640 & 252 3200 & 84 640 & 420 4480 & 84 640 & 588
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