Algebra
Find the least common multiple. 18, 45
Holt McDougal Larson Pre-Algebra Common Core Edition page 782 number 28
Holt McDougal Larson Pre-Algebra Common Core Edition page 782 number 28
First factor both numbers
18 2*3*3
45 3*3*5
2*3*3*5
The LCM is the product of all the columns for the factors
=2*3*3*5=90