Back to 11.1 Systems of Linear Equations: Two Variables

Solving a System of Equations in Two Variables by Substitution

Avg difficulty 2.5

Solve the following system of equations by substitution.

\begin{matrix}- x + y = −5 \\ 2 x - 5 y = 1\end{matrix}

OpenStax Algebra and Trigonometry 2e, 11.1 Systems of Linear Equations: Two Variables, exercise 11

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.