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OpenStudy (anonymous):
Solve the following system. x − y = 10 x + y = 8 a. (-9, 1) b. (9, -1) c. (9, 1) d. (-1, 9)
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OpenStudy (ganpat):
x − y = 10 x + y = 8 solve them , adding them 2x = 18, x= 9 and y = 8 - 9 = -1 so (9, -1).. option b
OpenStudy (anonymous):
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