What Are Variables?

Variables are symbols, usually letters, that stand in for numbers we don't know yet. They make math flexible and powerful! Instead of always working with specific numbers, we can use variables to express general ideas.

Why Do We Use Variables?

Variables help us write rules, formulas, and patterns. They’re like placeholders in a game, and we can solve for their values.

How Do Variables Work?

You can use any letter as a variable, but the most common are \( x \), \( y \), and \( z \). If you see \( x + 3 = 7 \), you know \( x \) is the mystery number we're trying to find.

Tips for Working with Variables

• Remember, a variable can be any number.
• You can use more than one variable in the same equation.
• Variables are the building blocks for algebraic expressions and equations.

Let's Explore!

Try changing the value of a variable and see how it affects the equation. It’s like solving a little mystery each time!