3: 3
28: 7, 2, 2
21: 7, 3
LCM = 3x7x4 = 84
Wiki User
∙ 12y agoWiki User
∙ 13y agoLCM of 3, 8 and 21 is 84...
Wiki User
∙ 10y ago84
LCM(21, 28, 42) = 84
The Least Common Multiple (LCM) for 3 21 is 21.
LCM of 12 and 21 is 84, which is also a multiple of 28 so 84 is your answer.
The LCM is: 252
The LCM is: 672
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 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) for 273 21 28 is 1,092.
The Least Common Multiple (LCM) for 3 21 is 21.
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.
21=3*7 28=4*7 LCM is thus 3*4*7 or 84 84/21=4 84/28=3
The factors of 21 are: 1, 3, 7, and 21.The prime factors of 21 are: 3 and 7.The factors of 28 are: 1, 2, 4, 7, 14, and 28.The prime factors of 28 are: 2 and 7.21- 1,3,7, and 2128- 1,2,4,7,14, and 28(-: i hope that this helps! (-:
The LCM is: 672