Question

решите систему уравнений желательно рассписанно!​

Answer 1

$\sf\displaystyle \left \{ {{y=x-8} \atop {xy=-7}} \right. \left \{ {{y=x-8} \atop {(x-8)x=-7 ;(1)}} \right. \\\\(1) ;(x-8) x=-7\\x^2-8x+7=0\\\left [{ {{x=7} \atop {x=1}} \right.\\ \\\left \{ {{y=x-8} \atop {\left [{ {{x=7} \atop {x=1}} \right. }} \right. \left [{ {{\left \{ {{x=1} \atop {y=-7}} \right. } \atop {\left \{ {{x=7} \atop {y=-1}} \right. }} \right.$

Ответ: $(1;-7);(7;-1)$