What is algebra used for?
Algebra is the branch of math that uses letters (like x or y) to represent unknown values, so you can describe relationships between numbers and solve for what's missing. It's the foundation for almost every other area of math and science — from balancing a budget to calculating speed, area, or interest.
This calculator handles common algebraic operations: simplifying expressions, solving linear equations, and isolating a variable on one side of the equation.
How to solve a basic linear equation
The core idea is to do the same operation to both sides of the equation until the variable is alone. For example, to solve 2x + 6 = 14: subtract 6 from both sides to get 2x = 8, then divide both sides by 2 to get x = 4.
The same principle — keep the equation balanced by doing identical operations on both sides — applies whether you're adding, subtracting, multiplying, or dividing. Enter your equation above and the calculator will show each step.