Предмет: Алгебра, автор: maslennikova243

вычислите координаты точек пересечения прямых x+3y=-12 и 4x-6y=-12

Ответы

Автор ответа: Ğåłåxý

получается система
x+3y=-12 ( умножаем на -4)
4x-6y=-12

Метод сложения

-4x-12y=48
4x-6y= -12

-18y=36
y=-2

x+3×(-2)=-12
x-6=-12
x=-6
Ответ: (-6;-2)

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