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Anonymous
the empty set
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The LCM is: 8,610
LCM(42, 70, 105) = 210
GCF: 7 LCM: 210
factoring 42=2*3*7 81=3*3*3*3 so LCM=3*3*3*3*2*7=1,134
The LCM is 1155.