Solving Systems of Equations Review Lesson

Solving Systems of Equations Review Lesson

by Tim Harrison

​Solve Using Elimination

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Use elimination to eliminate one of the variables.

3x+4y=18

-3x+5y=9

What would be the one step equation that remains?

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Use elimination to eliminate one of the variables.

5x+5y=10

2x-5y=4

What would be the one step equation that remains?

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Use elimination to eliminate one of the variables.

-2x-4y=8

2x-4y=0

What would be the one step equation that remains?

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Use elimination to eliminate one of the variables.

3x-8y=27

-3x-7y=-27

What would be the one step equation that remains?

​After the first step of elimination

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Solve the following equation

$$9y=27$$  

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Solve the following equation

$$7x=14$$  

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Solve the following equation

$$-8y=8$$  

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Solve the following equation

$$-15y=0$$  

​How to find the second answer

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Solve for the missing variable.

y=3

$$3x+4y=18$$  

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Solve for the missing variable.

x=2

$$5x+5y=10$$  

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Solve for the missing variable.

y=-1

$$2x-4y=0$$  

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Solve for the missing variable.

y=0

$$3x-8y=27$$