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The LCM of 420 and 560 is 1680.
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Find least common multiple (LCM) of: 840 & 1120 210 & 280 1260 & 1680 2100 & 2800 84 & 112 2940 & 3920 60 & 80 840 & 560 420 & 1120 1260 & 560 420 & 1680 2100 & 560 420 & 2800 2940 & 560 420 & 3920
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