Learn to write, evaluate, and simplify expressions with variables. Build a strong foundation for algebra.
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Create Free AccountAn algebraic expression combines numbers, variables (like x or y), and operations (+, -, ×, ÷). For example, 3x + 5 is an expression where x is a variable that can represent any number.
To evaluate an expression, substitute the given value for the variable and calculate. For example, if x = 4, then 3x + 5 = 3(4) + 5 = 12 + 5 = 17.