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Find the LCM of the top two first, then take that answer and find the LCM of that and the smallest number.
LCM is the product divided by the GCF
15 factors to [3 5]
22 factors to [2 11]
No common factors
LCM = 15 * 22 = 330
330 factors to [2 3 5 11]
12 factors to [2 2 3]
common factors are [2 3] GCF=6
LCM = 330 * 12 / 6 = 660 ■
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Earn +20 ptsQ: What is the lowest common multiple of 12 15 and 22?
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