Find the least common multiple. 21, 28

Holt McDougal Larson Pre-Algebra Common Core Edition page 782 number 26

Asked by Dee Dee on 25 Apr 07:26

Last updated by anonymous on 25 Apr 23:14

Answered by CherieS on 25 Apr 23:14

First factor the numbers

21 3*7

28 7 *2*2

3*7*2*2

The LCM is the product of all the columns of factors

=3*7*2*2=84