Multiply 21 and 11 to get a common multiple. Since 21 and 11 have no common factors, that also happens to be the least common multiple.All other common multiples are multiples of this least common multiple.
The Least Common Multiple (LCM) of (3,7) is 21.
The least common multiple of the numbers 72 and 21 is 504.
84
105
The Least Common Multiple of 21 and 30 is 210.
It is 210.
The LCM is: 42
The LCM is 63.
The LCM is 189.
It is: 42
126