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OpenStudy (anonymous):
Show all your work. x+y=-4 x-y=2
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OpenStudy (lalaly):
x+y=4 ... (1) x-y=2.....(2) from (2) x=2+y substitute in (1) (2+y)+y=4 2y=2 y=1 then substitute in (2) x-1=2 x=3
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