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Algebra

Systems of equations

Solutions and checks for systems of two linear equations.

Two-equation system determinant

D = ad−bc→Algebra

Solve x in two equations

x = (ed−bf)/(ad−bc)→Algebra

Solve y in two equations

y = (af−ec)/(ad−bc)→Algebra

First system equation residual

r₁ = ax+by−e→Algebra

Second system equation residual

r₂ = cx+dy−f→