The LCM is 84.
The LCM is 2520.
2 x 2 x 3 = 12 3 x 7 = 21 2 x 2 x 3 x 7 = 84, the LCM
LCM for 2 and 21 is 42.
The LCM is 12.
The LCM is: 420
The LCM is: 3,948
The LCM is 168.
The Least Common Multiple (LCM) for 12 21 30 70 is 420.
LCM of 4 7 12 21 is 84
The least common multiple of 6, 12 and 21 is 84.
LCM of 12 and 21 is 84, which is also a multiple of 28 so 84 is your answer.