Respuesta :

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[tex] \left \{ {{2x+y=7\ \ | *4} \atop {3x-4y=5}} \right. \\\\ \left \{ {{8x+4y=28} \atop {3x-4y=5}} \right. \\+----\\Addition\ method\\\\ 11x=33\ \ \ | divide\ by\ 11\\ x=3\\\\y=7-2x\\ y=7-2*3=7-6=1\\\\Solution:\\ \left \{ {{y=1} \atop {x=3}} \right. [/tex]

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