1. Basics of Algebra Variables: Symbols (like x, y) that represent unknown values. Constants: Fixed values (like 2, -5). Expressions: Combinations of variables and constants (e.g., 3x + 4). Equations: Statements that two expressions are equal (e.g., 2x + 3 = 7). 2. Operations with Algebraic Expressions Addition/Subtraction: Combine like terms (e.g., 3x + 4x = 7x). Multiplication: Use the