Definition: Adding and Subtracting Variables

Adding and subtracting variables involves performing arithmetic operations on variables. In mathematics, a variable is a symbol that represents a quantity that can change or vary. When you add or subtract variables, you are essentially combining or taking away quantities that are represented by those variables.

Explanation:

In algebra, you can add or subtract terms with the same variable and power. For example, 3x + 2x = 5x. When subtracting variables, keep the variable term unchanged and simplify if needed.