Systems Of Equations Calculator
Use the Systems Of Equations Calculator for a transparent, instant calculation with validated inputs and cited sources. For a query such as “system of equations calculator”, enter the matching values and units below and review the stated assumptions. The same model applies to the related search “system of equations calculator” only when it uses the displayed inputs and assumptions.
How to use this calculator
Enter the requested values and units.
Review the assumptions and any warnings shown with the result.
Use the result together with the cited source and your real-world requirements.
Formula
For a₁x + b₁y = c₁ and a₂x + b₂y = c₂, use Cramer’s rule: determinant = a₁b₂ − a₂b₁, x = (c₁b₂ − c₂b₁)/determinant, and y = (a₁c₂ − a₂c₁)/determinant, then verify by substitution.
Worked example
Worked example: Inputs: a₁: 2; b₁: 1; c₁: 5; a₂: 1; b₂: -1; c₂: 1. Outputs: x: 2; y: 1; Cramer’s rule steps: D = a₁b₂ − a₂b₁ = -3; x = (c₁b₂ − c₂b₁) / D = 2; y = (a₁c₂ − a₂c₁) / D = 1; Substitution check: Equation 1: 5 = 5; Equation 2: 1 = 1.
Assumptions and limits
- The result depends on the values, units, and assumptions entered. It does not infer missing context.
Sources
- OpenStax, Rice University: Precalculus 2eReference material reviewed for the stated method, units, or domain. Confirm that its scope matches your use case. Reviewed 2026-08-14.
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Frequently asked questions
How does the Systems Of Equations Calculator work?
For a₁x + b₁y = c₁ and a₂x + b₂y = c₂, use Cramer’s rule: determinant = a₁b₂ − a₂b₁, x = (c₁b₂ − c₂b₁)/determinant, and y = (a₁c₂ − a₂c₁)/determinant, then verify by substitution.
What should I enter?
a₁, b₁, c₁, a₂, b₂, c₂
What should I verify?
Review the assumptions and any warnings shown with the result. The result depends on the values, units, and assumptions entered. It does not infer missing context.
Last updated 2026-08-14 · math-systems-of-equations-v1 · opportunity-content-2026-08-14 · Trusty Calculator Editorial Team