FR.1.BTAII.7

Solve systems of equations in two variables using substitution and elimination. Understand that the solution to a system of equations will be the same when using substitution and elimination.

Example Problems
Determine whether to add or subtract the following system of equations to eliminate a variable:
Determine whether to add or subtract the following system of equations to eliminate a variable:
Determine whether to add or subtract the following system of equations to eliminate a variable:

Khan Academy Resources
Equivalent 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 substitution: 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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