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OpenStudy (anonymous):
Solve: 2x + y = 7,x – y = –4 Answers: (1, –5) (1, 5) (–1, 5) (–1, –5)
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OpenStudy (anonymous):
is this suppose to be a system of equations?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
just add the two together and get rid of the y variable and solve for the x variable
OpenStudy (anonymous):
|dw:1315066836841:dw|
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