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OpenStax, Algebra and Trigonometry 2e §11.1 Systems of Linear Equations: Two Variables · Example 6 · Algebra · Systems

Solving a System by the Addition Method

Solve the given system of equations by addition.

$x + 2 y = - 1 - x + y = 3$

~5 minWritten answer · check your work with Lemma

OpenStax, Algebra and Trigonometry 2e · §11.1 Systems of Linear Equations: Two Variables · Example 6

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