Prime factors of 30 are: 2, 3 and 5
Prime factors of 42 are: 2, 3 and 7
LCM = 2*3*5*7 = 210
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The LCM is 210.
Least Common Multiple (LCM) for 6 30 42 is 210.
Th LCM of 21 and 42 is: 42
You can only find the LCM of two or more numbers. One way to do this is by listing the multiples of each number until you reach a number that appears on both lists. Example 30 and 42 30, 60, 90, 120, 150, 180, 210 42, 84, 126, 168, 210 210 is the LCM of 30 and 42
420