Algebra uses letters and numbers to represent relationships.

Variables (like x, y) stand for unknown values.

Equations show equality between two expressions.

Solve by isolating the variable using inverse operations.

Like terms can be combined (e.g., 2x + 3x = 5x).

Use the distributive property: a(b + c) = ab + ac.

Inequalities compare values with <, >, ≤, or ≥.

Algebra helps model real-world problems.

Graphs show relationships between variables visually.

It's a foundation for advanced math, science, and logic.