This video covers how to add fractions involving algebra, when the letters are on the top (the numerator) and when they are on the bottom (the denominator).
Before watching this video, it is recommended that you refresh your memory of how to add fractions without using a calculator! The skill of adding fractions without a calculator is necessary when the fractions involve algebra.
A guide on how to add fractions can be found here:
This topic also builds on the fundamental concepts of algebra, so make sure you've seen Introduction to Algebra before watching this video.