Equation Calculator
Solve linear equations for x. Enter an equation like 2x + 5 = 15 and get the solution with steps.
Supports: ax + b = c, ax + b = cx + d
Enter an equation to solve.
How to Solve a Linear Equation
- Move all terms with x to one side.
- Move all constant terms to the other side.
- Divide both sides by the coefficient of x.
ax + b = c → x = (c − b) / a
Example: 3x + 7 = 22
3x = 22 − 7 = 15
x = 15 / 3 = 5
3x = 22 − 7 = 15
x = 15 / 3 = 5
FAQ
What equations can this solve?
This calculator solves linear equations with one variable (x). For quadratic equations, use the Quadratic Equation Calculator.
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Last updated: 2026-08-08