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The LCM of 640 and 420 is 13440.
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Find least common multiple (LCM) of: 1280 & 840 320 & 210 1920 & 1260 3200 & 2100 128 & 84 4480 & 2940 1280 & 420 640 & 840 1920 & 420 640 & 1260 3200 & 420 640 & 2100 4480 & 420 640 & 2940
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