Adding and Subtracting Rational Expressions

In this lesson, students learn how to add and subtract rational expressions by finding a common denominator. We start by identifying the least common denominator (LCD), then rewrite each expression so they share that denominator. After that, we combine the numerators while keeping the denominator the same. The lesson also covers simplifying final answers and identifying any values that would make the expression undefined. Students will practice these steps with a variety of examples to build confidence and accuracy.