84
LCM(6, 21, 28) = 84.
LCM(21, 28, 42) = 84
The LCM is: 84
Of each of them on their own respectively is 28, 21 and 9. together is 252
The Least Common Multiple (LCM) for 273 21 28 is 1,092.
LCM(28, 6) = 84.
The LCM is: 672
The LCM is: 252
The LCM is: 672
The Least Common Multiple (LCM) of 35, 21, and 28 is 420.
LCM of 12 and 21 is 84, which is also a multiple of 28 so 84 is your answer.
The LCM is 714.