Answer
$(4,-1)$
Work Step by Step
Green line: $x+y=3$
Purple line: $x-y=5$
$x-y=5$
$x=5+y$
$x+y=3$
$(5+y)+y=3$
$5+2y=3$
$2y=-2$
$2y/2=-2/2$
$y=-1$
$x+y=3$
$x+(-1)=3$
$x-1=3$
$x=4$
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