3=3*1 7=7*1 21=3*7 LCM=(3*7)=(21*1)=21
If you mean 7 and 13 then the LCM is 91
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]
LCM 21, and GCF =1
the lcm of 1 2 3 4 5 6 7 is 420
You can't find the LCM of a single number. The LCM of 3,4,5 and 6 is 60.
Te LCM of 3 5 7 is 105 105. They share no common factors, so you just multiply them all together. 15 * 7 = 105
The LCM of 1 and 7 is 7.
21 is the LCM of 3 and 7
the lcm of 3 and 7 is 21 and the lcm of 7 and 21 is 21, so the lcm of 3, 7 and 21 is the lcm of 21 and 21 which is 21.
The Least Common Multiple (LCM) of 7, 3, and 6 is 42.
The LCM is 105.