5.3 Solve Systems of Equations by Elimination - OpenStax
https://openstax.org/books/elementary-algebra-2e/pages/5-3-solve-systems-of-equations-by-elimination
WEBThe third method of solving systems of linear equations is called the Elimination Method. When we solved a system by substitution, we started with two equations and two variables and reduced it to one equation with one variable. This is what we’ll do with the elimination method, too, but we’ll have a different way to get there.
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