Question

Даю 40 балів допоможе ​

Answer 1

$\displaystyle\bf\\\left \{ {{2x=2} \atop {x+y=8}} \right. \\\\\\\left \{ {{x=1} \atop {y=8-x}} \right. \\\\\\\left \{ {{x=1} \atop {y=8-1} \right. \\\\\\\left \{ {{x=1} \atop {y=7}} \right. \\\\\\Otvet \ : \ (1 \ ; \ 7)$