Linear Equation Solver
Solve ax + b = 0 for x.
About this calculator
The Linear Equation Solver on NumberCals is a free, mobile-friendly tool for anyone needing to solve ax + b = 0 for x. Enter your values in the form below and the result is computed instantly — no sign-up, no installation, no waiting.
Formula used
x = −b / a
What you'll need
- a (coefficient of x) (e.g. 2)
- b (constant) (e.g. -6)
What you'll get
- x
Formula
x = −b / a
Result
Frequently Asked Questions
What if a = 0? +
Then it's not linear. If b also = 0, every x is a solution; if b ≠ 0, no solution exists.
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