3
3| 9 21 18
3| 3 7 6
2| 1 7 2
7| 1 7 1
| 1 1 1
3*3*2*7 = 126
[Edited by lcm][james_cherming@hotmail.com]
The LCM is: 126
The LCM of 21 and 18 is 126.
The LCM is 18.
LCM(21, 42, 18) = 126
The least common multiple (LCM) refers to a multiple that is COMMON to two or more numbers. You have only one number in the question! The least multiple of a number is itself.
12 and 9. Since both have to be multiples of 3 and sum to 21, the only pairs to consider are 3 and 18 6 and 15 9 and 12 Of these, 3 and 18 have an LCM of 18 and 6 and 15 have an LCM of 30.
The LCM is 18.
The LCM of 3, 6 and 9 is 18.
The LCM is 2520.
The LCM is 18.
The LCM is 18.
The LCM is 441.