Pre-Algebra 14 - Creating Common Denominators

The video tutorial explains how to add and subtract fractions, focusing on finding a common denominator when the denominators differ. It uses number lines to visualize the process and provides examples to illustrate the method. The tutorial concludes with a preview of finding the least common denominator.

How do you create equivalent fractions when changing denominators?

What is the result of adding the fractions 2/5 and 3/7?

Why is it sometimes unnecessary to create a large common denominator?