About the algebra calculator
This free algebra calculator solves simple linear equations in one variable step by step. You enter an equation in the form ax + b = c (for example 2x + 3 = 7 or x − 5 = 10), and the calculator shows the value of x and each step used to get there. It is intended for students learning algebra, anyone checking homework, or quick equation solving—no sign-up or download required. The tool runs in your browser and works on phones and tablets.
Algebra uses variables (such as x) to represent unknown numbers. A linear equation has the variable only to the first power. To solve ax + b = c, you isolate x by doing the same operation on both sides: subtract b from both sides, then divide both sides by a. This calculator performs those steps and displays them so you can follow the logic. Supported examples include equations with positive or negative numbers, decimals, and a coefficient of 1 (e.g. x + 2 = 5). Use lowercase x and avoid spaces or extra symbols for best results.
This calculator handles only one-variable linear equations. It does not solve quadratic equations (with x²), systems of equations (multiple variables), inequalities, or complicated expressions. For those, use a quadratic solver, equation system solver, or math software. Here you can practice basic linear forms, check your work, and see each step clearly. Regular practice with simple equations builds the foundation for harder algebra and beyond.
Tips: substitute your answer back into the original equation to verify it; start with simple cases like x + 3 = 8 before trying coefficients and decimals; and use the step-by-step output to understand why each move is made. This algebra calculator is free, mobile-friendly, and focused on making linear equation solving clear and quick. Whether you are in the classroom, at home, or on the go, you can solve equations in the form ax + b = c and see every step without creating an account.