The Least Common Multiple (LCM) for 21 24 is 168.
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
21=1x3x7 75=1x3x5x5 LCM=1x3x5x5x7=525
3 x 7 = 21 2 x 2 x 2 x 3 = 24 2 x 2 x 2 x 3 x 7 = 168, the LCM
3 x 7 = 21 2 x 2 x 2 x 3 = 24 2 x 2 x 2 x 3 x 7 = 168, the LCM
21 = 3*7 56 = 23*7 LCM = 23 * 3 * 7 = 168