In this lesson, Professor Perez finishes his introduction to fractions series by explaining how to find the lowest common denominator in order to add or subtract fractions with different denominators. By using examples and step-by-step instructions, he shows how to write each fraction with the same denominator and then perform the arithmetic. With practice, students can improve their skills in adding and subtracting fractions efficiently.
The fourth part of the introductory series on fractions.
Created by and copyright of Larry Perez. Funded by the state of California through Saddleback College. More information on videos, resources, and lessons at Algebra2Go.