Least Common Multiple (LCM) of 660 and 42

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To get the Least Common Multiple (LCM) of 660 and 42 we need to factor each value first and then we choose all the factors which appear in any column and multiply them:

660:   2235 11
42:   2 3 7 
LCM:   2235711

The Least Common Multiple (LCM) is:   2 x 2 x 3 x 5 x 7 x 11 = 4620

 

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