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21 = 3*7
56 = 23*7
LCM = 23 * 3 * 7 = 168
3
The LCM is 56.
The LCM is 392.
The LCM is 280.
The LCM is: 105
The LCM is: 42
It is 231
It is 42
It is: 210
The LCM of 21 & 30 is... 210
252
7
21=1x3x7 75=1x3x5x5 LCM=1x3x5x5x7=525
The LCM of these numbers is 56. LCM is Least Common Multiple.