Solving systems of linear equations

Algebra
Tutor: None Selected Time limit: 1 Day

x+y=2

-x+y=-2

Ordered pair..if any

Sep 14th, 2015

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x+y=2

-x+y=-2

 so : 


x + y = 2 

y - x = 2 

so : 

x = 2 - y  we put x on the other equation 

 y - 2 + y  = 2  so :  2y - 2 = 2  so :  2y = 4   so : y = 2 

we put the y on the other equation so : 

2 - x = 2  so : x = 0 


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Sep 14th, 2015

What would be the ordered pair ?

Sep 14th, 2015

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