How it works
Solve a single linear equation. A zero coefficient does not determine one unique solution and is rejected.
ax + b = 0 → x = −b/a
Worked example
Show example inputs and result
Coefficient a: 3 · Constant b: -12.
- Result
- 4
Questions and answers
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Method reviewed: October 8, 2026 · Methods & accuracy