Start by factoring each of the numbers. Then eliminate duplicate factors, and multiply together whatever factors are left. 42=2x3X7 30=2x3x5 Since the 2 and 3 are duplicated, eliminate the duplications, and multiply 2X3X5X7=210. Answer: 210
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The LCM is 210.
Least Common Multiple (LCM) for 6 30 42 is 210.
420
It is: 1260
Prime factors of 30 are: 2, 3 and 5 Prime factors of 42 are: 2, 3 and 7 LCM = 2*3*5*7 = 210