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OpenStudy (anonymous):
solve this system with elimination -x+5y=13 x-y=15
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OpenStudy (mertsj):
If you add the two equations the x terms will drop out since they are opposites.
OpenStudy (nikato):
If u add them both up, u'll get 4y=28 So what is y?
OpenStudy (anonymous):
-x+5y=13 + x-y=15 add them together, and the x's cancel. 4y=28. Divide by 4 on both sides, y=7. Plug 7 into one of the equations. x-(7)=15 +7 +7 x=22 The solution set is (22,7)
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