It is: 60
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12 3x4=12 4x3=12 12x1=12
3 and 20 have no common factor so LCM is 3 x 20 ie 60
LCM of 12, 3, and 16 is 48
If you mean: 8, 20 and 12 then the LCM is 120
The LCM of 5 and 25 is 25. The LCM of 3 and 15 is 15. The LCM of 5-25=-20 and 3-15=-12 is 60