 Ever looked at a math problem and wondered why there are letters mixed in with the numbers? What's up with these X's and Y's playing around in math equations? Join me as we explore these questions in today's episode of Mr. Marks, Math Adventures. Hey Math Learners, it's Mr. Marks, your friendly neighborhood math teacher. Remember, it's not just about getting the right answers, it's about learning and growing along the way. Before we go into today's adventure, remember to hit that subscribe button and ring the bell to stay tuned for future episodes. And today, we're going to embark on an exciting journey into the world of algebraic expressions. But first, let's talk about what algebraic expressions are. And as we start, always feel free to use the companion worksheet. It's a great tool to follow along with the episode and to keep track of your notes. The companion worksheet's free to download, link in the description. Now, algebraic expressions are like puzzles made up of numbers, variables,