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![left { {{2x-2y-x-y+12=0} atop {5y-2x-10=0}} right. left { {{x=3y-12} atop {5y-2(3y-12)-10=0}} right. left { {{x=3y-12} atop {5y-6y+24-10=0}} right. left { {{x=3y-12} atop {-y+14=0}} right. left { {{2x-2y-x-y+12=0} atop {5y-2x-10=0}} right. left { {{x=3y-12} atop {5y-2(3y-12)-10=0}} right. left { {{x=3y-12} atop {5y-6y+24-10=0}} right. left { {{x=3y-12} atop {-y+14=0}} right.](https://tex.z-dn.net/?f=left+%7B+%7B%7B2x-2y-x-y%2B12%3D0%7D+atop+%7B5y-2x-10%3D0%7D%7D+right.++left+%7B+%7B%7Bx%3D3y-12%7D+atop+%7B5y-2%283y-12%29-10%3D0%7D%7D+right.++left+%7B+%7B%7Bx%3D3y-12%7D+atop+%7B5y-6y%2B24-10%3D0%7D%7D+right.++left+%7B+%7B%7Bx%3D3y-12%7D+atop+%7B-y%2B14%3D0%7D%7D+right.)
![left { {{x=3y-12} atop {y=14}} right. left { {{x=30} atop {y=14}} right. left { {{x=3y-12} atop {y=14}} right. left { {{x=30} atop {y=14}} right.](https://tex.z-dn.net/?f=left+%7B+%7B%7Bx%3D3y-12%7D+atop+%7By%3D14%7D%7D+right.++left+%7B+%7B%7Bx%3D30%7D+atop+%7By%3D14%7D%7D+right.)
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