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9 = 3 x 3
6 = 3 x 2
LCM = 3 x 3 x 2
LCM = 18
LCM(9, 8, 6) = 144.
It is: 72
18
72
90
30
12
Is 12.
The LCM is 630.
LCM(6, 7, 9) = 126.
Any multiple of 18.
168 is the least common multiple of 56 and 84
42
It is: 6