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OpenStudy (anonymous):
solve the system of equations by graphing. then classify the system x+y=15 x-y=-3
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OpenStudy (anonymous):
If you add them together: x+y=15 + x-y=3 ____________ 2x+0=18 2x=18 x = 9
OpenStudy (anonymous):
so would the coordinates be (2,18) and (9,0) ?
OpenStudy (anonymous):
I missed a (-) sign in my addition. It should be 2x+0 = 12.
OpenStudy (anonymous):
Therefore x=6 and y=3
OpenStudy (anonymous):
how do I find the solution for this system of equations?
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