How to Add and Subtract Fractions with Different Denominators

Sheena Doria

This comprehensive math tutorial guides students through the process of adding and subtracting dissimilar fractions—fractions with different denominators. The video begins with a conceptual approach, using visual area models to demonstrate why denominators must be the same before operations can be performed. It then transitions to the standard algorithmic method, teaching students how to find the Least Common Denominator (LCD), convert fractions to equivalent forms, and perform the final addition or subtraction.