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High School
Algebra
Domain
Reasoning with Equations and Inequalities
Cluster
Solve systems of equations.
Standard
Prove that, given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions.
A-REI.C.5. Prove that, given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solutions.
Solving Two Equations in Two Unknowns