Year 10 Interactive Maths - Second Edition

Lowest Common Multiple (LCM) of Expressions

To find the LCM of given expressions, we proceed as follows:

• Express each of the expressions as the product of its factors including prime factors where applicable.
• Find the product of each factor with the highest power which occurs in the given expressions.
• This product is the LCM.

Example 7

Solution:

Example 8

Solution:

Key Terms

lowest common multiple, LCM