Предмет: Математика, автор: supermadiev

Помогите!!!ПЛИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИИЗ

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Автор ответа: Аноним

0

Ответ:

$\left \{ {{5y+6x=6} \atop {y+2x=-2\ \ \ \ |*(-3)}} \right. \\\\\left +\{ {{5y+6x=6} \atop {-3y-6x=6}} \right. \\2y=12 \ \ \ \ \ \ \ |:2\\y=6$

Если у = 6 , то 2х = -2-6

2х = -8 | :2

х = -4

Ответ: (-4 ; 6)

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