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Solve a linear equation system

Solve a linear equation system: Apply Gaussian elimination with partial pivoting to an n×(n+1) augmented matrix.

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How it works

Apply Gaussian elimination with partial pivoting to an n×(n+1) augmented matrix. Normalize each pivot and eliminate its column from other rows.

Input definitions

Augmented matrix: coefficients then right-hand side, no header
Plain text; maximum 200,000 characters.

A worked example

Augmented matrix: coefficients then right-hand side, no header
2,1,5 1,-1,1
2 variables solved

Assumptions & limits

Square systems with a unique numerically stable solution, up to 10 variables. Coefficients within ±10¹²; no symbolic or least-squares solution.

Sources & review

Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.

Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.

Common questions

Why does the solver reject a system instead of returning numbers?

A singular system may have no unique solution. Very small pivots relative to the coefficient scale indicate numerical instability, so the tool rejects the case rather than presenting a misleading unique answer.

How does Solve a linear equation system work?

Apply Gaussian elimination with partial pivoting to an n×(n+1) augmented matrix. Normalize each pivot and eliminate its column from other rows.

What are the limits of Solve a linear equation system?

Square systems with a unique numerically stable solution, up to 10 variables. Coefficients within ±10¹²; no symbolic or least-squares solution.

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