Solve x-y=1 ; x+y= 3
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Hey user...
x-y=1
=>Put x=0
=>0-y=1
=>y= -1
x+y=3
=>Put x=1
y=2
x-y=1
=>Put x=0
=>0-y=1
=>y= -1
x+y=3
=>Put x=1
y=2
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