Least Common Multiple (LCM) of 20 and 9

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To get the Least Common Multiple (LCM) of 20 and 9 we need to factor each value first and then we choose all the factors which appear in any column and multiply them:

20:   22  5
9:     33 
LCM:   22335

The Least Common Multiple (LCM) is:   2 x 2 x 3 x 3 x 5 = 180

 

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