3: 3
28: 7, 2, 2
21: 7, 3
LCM = 3x7x4 = 84
LCM(21, 28, 42) = 84
The Least Common Multiple (LCM) for 3 21 is 21.
The LCM is: 672
The LCM is: 252
LCM of 12 and 21 is 84, which is also a multiple of 28 so 84 is your answer.
LCM(21, 28, 42) = 84
The LCM is: 84
LCM(6, 21, 28) = 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.
The Least Common Multiple (LCM) for 3 21 is 21.
The LCM of 3 and 21 is 21
The LCM is: 672
The LCM is: 672
The LCM is: 252
LCM of 12 and 21 is 84, which is also a multiple of 28 so 84 is your answer.
The Least Common Multiple (LCM) of 35, 21, and 28 is 420.