Understanding Variables
Welcome to the wonderful world of variables! In algebra, variables are symbols used to represent unknown values. They allow us to manipulate equations and solve problems. The most common variable is x, but we can use any letter, like y, z, or any other symbol.
Here is a simple equation: x + 3 = 5. We can solve this to find out that x equals 2.
Why Use Variables?
Variables provide a way to represent and work with numbers even if we donât know their specific values. This abstraction allows for general solutions and calculations.
â¨Fun with variables: Consider a scenario where you have n froges in a pond. If 3 more arrive, how many froges are there? The expression is n + 3.