System of Equations Solver (2×2, 3×3, 4×4)
System of equations solver: solve 2, 3 or 4 linear equations with 2, 3 or 4 unknowns by Gaussian elimination.
A · x = b
How to use this calculator
- Type your input in the box.
- The result updates as you type.
- Use “Copy result” or “Copy link” to share it.
Write each equation as its coefficients followed by the constant: 2x + y − z = 8 becomes “2 1 -1 8”. If the determinant is zero there is no unique solution.
Frequently asked questions
2x + y − z = 8, −3x − y + 2z = −11, −2x + y + 2z = −3?
x = 2, y = 3, z = −1.
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