Question

решите систему уравнений -x = 3-2y и x-5y=-6

Answer 1

$- x = 3 - 2y \\ x - 5y = - 6 \\ \\ - x + 2 y= 3 \\ x - 5y = - 6 \\ \\ - 3y = - 3 \\ x = 2y - 3 \\ \\ y = 1 \\ x = 2 - 3 = - 1$
Ответ: (-1; 1)