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The LCM of 42 and 640 is 13440.
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Find least common multiple (LCM) of: 84 & 1280 21 & 320 126 & 1920 210 & 3200 294 & 4480 84 & 640 42 & 1280 126 & 640 42 & 1920 210 & 640 42 & 3200 294 & 640 42 & 4480
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