Introduction
Mr. Alvarez drives a distance of x kilometers (km) from his house to his office at a speed of 60 km/h. To go back to his house from his office, he uses the same route and drives at a speed of 50 km/h. The total time it takes for Mr. Alvarez's round-trip is given by a sum of two rational expressions:
In this lesson, you will learn how to add and subtract rational expressions like in the example above. You will also learn how to simplify complex fractions.
