👉 Variables in mathematics are symbols used to represent unknown quantities or values that can change within a problem or equation. They allow mathematicians and students to generalize concepts, simplify complex expressions, and solve equations systematically. For example, in the equation \( y = mx + b \), \( m \) and \( b \) are variables representing the slope and y-intercept of a linear function, respectively. These variables can take on any real number value, making the equation flexible and applicable to a wide range of situations. Understanding how to manipulate and solve equations involving variables is fundamental in algebra and higher mathematics.