Khan Academy
Khan Academy: Algebra: Equivalent Systems of Equations
Determine whether a couple of given systems of equations are equivalent or not to a third given system. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Algebra I: Equivalent Systems of Equations Review
Two systems of equations are equivalent if they have the same solution(s). This article reviews how to tell if two systems are equivalent. Examples are provided.
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Algebra.com: Solution: Given a System of Two Equations in Two Variables
This activity shows an example of how to solve a system of equations using elimination. Each step is explained in detail. Additional links are provided for more information on properties of equality, solving equations, and solving a...