The LCM is: 441
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LCM OF 9,3 AND 21 IS 63. CHECK FOR YOURSELF IF YOU ARE NOT SURE.
The least common multiple is the smallest number that is multiple of two or more numbers. 21: 21, 42, 63 63: 63 The LCM of 21 and 63 is 63.
The least common multiple of the numbers 14, 49, 63 and 84 is 1,764.
LCM(21, 49, 56) = 1176
7 14 21 28 35 42 49 56 63 9 18 27 36 45 54 63 lowest common multiple therefore is 63.