The LCM of 3 and 21 is 21

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 LCM of 3 and 21 is 21.

The LCM is: 21 LCM of 3 & 7 is 21.

The Least Common Multiple (LCM) for 3 21 is 21.

The LCM is 63.

LCM of 3, 8 and 21 is 84...

3 3*7=21 3*30=90 * * * * * That is the Greatest Common Factor, GCF, not the LCM. LCM(21, 90) = 630

3=3*1 7=7*1 21=3*7 LCM=(3*7)=(21*1)=21

21 is the LCM of 3 and 7

The Least Common Multiple (LCM) for 21 3 9 is 63.

The Least Common Multiple (LCM) for 3 15 21 is 105.

The LCM is: 168

21 is.

3 and 42, respectively.

3: 3 28: 7, 2, 2 21: 7, 3 LCM = 3x7x4 = 84