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3) ![left { {{6x+3=8x-3(2y-4)} atop {2(2x-3y)-4x=2y-8}} right. left { {{6x+3=8x-3(2y-4)} atop {2(2x-3y)-4x=2y-8}} right.](https://tex.z-dn.net/?f=+left+%7B+%7B%7B6x%2B3%3D8x-3%282y-4%29%7D+atop+%7B2%282x-3y%29-4x%3D2y-8%7D%7D+right.+)
![left { {{6x-8x+6y=12-3} atop {4x-6y-4x-2y=-8}} right. left { {{6x-8x+6y=12-3} atop {4x-6y-4x-2y=-8}} right.](https://tex.z-dn.net/?f=+left+%7B+%7B%7B6x-8x%2B6y%3D12-3%7D+atop+%7B4x-6y-4x-2y%3D-8%7D%7D+right.+)
![left { {{6y-2x=9} atop {8y=8}} right. left { {{6y-2x=9} atop {8y=8}} right.](https://tex.z-dn.net/?f=+left+%7B+%7B%7B6y-2x%3D9%7D+atop+%7B8y%3D8%7D%7D+right.+)
![left { {{y=1} atop {6-2x=9}} right. left { {{y=1} atop {6-2x=9}} right.](https://tex.z-dn.net/?f=+left+%7B+%7B%7By%3D1%7D+atop+%7B6-2x%3D9%7D%7D+right.+)
![left { {{y=1} atop {-2x=3}} right. left { {{y=1} atop {-2x=3}} right.](https://tex.z-dn.net/?f=+left+%7B+%7B%7By%3D1%7D+atop+%7B-2x%3D3%7D%7D+right.+)
![left { {{y=1} atop {x=-1.5}} right. left { {{y=1} atop {x=-1.5}} right.](https://tex.z-dn.net/?f=+left+%7B+%7B%7By%3D1%7D+atop+%7Bx%3D-1.5%7D%7D+right.+)
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