Justify that the solution to a system of linear equations is not changed when one of the equations is replaced by a linear combination of the other equation.
Khan Academy ResourcesEquivalent systems of equations reviewElimination method review (systems of linear equations)Systems of equations with eliminationSystems of equations with elimination challengeSystems of equations word problems (with zero and infinite solutions)Reasoning with systems of equationsSystems of equations with elimination: x-4y=-18 & -x+3y=11Systems of equations with elimination: King's cupcakesSystems of equations with elimination: potato chipsSystems of equations with elimination: TV & DVDWhy can we subtract one equation from the other in a system of equations?Reasoning with systems of equationsWorked example: equivalent systems of equationsWorked example: non-equivalent systems of equationsSystems of equations with elimination: coffee and croissantsSystems of equations with elimination: apples and oranges
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