Question

Подайлуста решыте пример по середине

Answer 1

$\displaystyle\bf\\\left \{ {{2x=1-y} \atop {y-x=-5}} \right. \\\\\\\left \{ {{2x=1-(x-5)} \atop {y=x-5}} \right. \\\\\\\left \{ {{2x=1-x+5} \atop {y=x-5}} \right. \\\\\\\left \{ {{2x+x=6} \atop {y=x-5}} \right. \\\\\\\left \{ {{3x=6} \atop {y=x-5}} \right. \\\\\\\left \{ {{x=2} \atop {y=2-5}} \right. \\\\\\\left \{ {{x=2} \atop {y=-3}} \right. \\\\\\Otvet \ : \ (2 \ ; \ -3)$