Question

Реши систему уравнений

x+y=12

2x-3y=14

15 баллов

Answer 1

Ответ:

$\left \{ {{x=12-y} \atop {2(12-y)}-3y=14} \right. \\\left \{ {{x=12-y} \atop {24-2y-3y=14} \right. \\\left \{ {{x=12-y} \atop {-5y=-10} \right.\\\left \{ {x=12-y} \atop {y=2} \right. \\\left \{ {{x=10} \atop {y=2} \right.$