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{8x-5y=-1
-8x-12y=-16
8x-5y=-1
-8x+8x-12y-5y=-17
-17y=-17
y=1
2x+3=4
2x=1
x=1/2
8x-5y=-1
-8x-12y=-16
8x-5y=-1
___________
-17y=-17
y=1
8x-5=-1
y=1
8x=4
y=1
x=2/4
y=1