The LCM is 420.
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LCM of 4 7 12 21 is 84
There can be only 1 LCM of a set of number and, in this case, it is 30.
The LCM of 6 and 12 is 12The least common multiple of 6 and 12 is 12... The LCM of 6 and 12 is 12 because 2*6 = 12 and 1*12 = 12
The simplest form of 12/84 is 1/7.
84 is the answer. There is 12 in a dozen so 7 dozen is 7 * 12 = 84. If its a "bakers dozen" (which is 13) then it would be 7 * 13 = 91