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# System of Equations - elimination

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## William Janie

on 1 June 2011

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#### Transcript of System of Equations - elimination

System of Equations - Elimination Important Vocabulary words Elimination: adding or subtracting two equations will eliminate one variable. Example: 3x-5y= -16
(+)2x+5y=31 5x+0=15 The variable (y) was eliminated After you've eliminated the (y) you just solve it like a regular equation 5x=15 DIVIDE
5 5 x=3 Then you plug the (x) back in either of the equations. 3x-5y= -16
2x+5y=31 2(3)+5y=31 6+5y=31 -6 -6 5y=25 5 5 y=5 So you have:
x=3
y=5
Then you have to write as a coordinate