Least Common Multiple (LCM) of 20 and 70

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To get the Least Common Multiple (LCM) of 20 and 70 we need to factor each value first and then we choose all the factors which appear in any column and multiply them:

20:   225 
70:   2 57
LCM:   2257

The Least Common Multiple (LCM) is:   2 x 2 x 5 x 7 = 140

 

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