Предмет: Алгебра, автор: НЕсиленВалгебре

Решите систему уравнений 2х+у=-2 -х+4у=19 Плизз ;)

Ответы

Автор ответа: azizovalina

1) 2х+у=-2; у=-2-2х;
2) -х+4у=19; -х+4(-2-2х)=19; -х-8-8х=19; -9х=27; х=-3
3) у=-2-2х; у=-2-2*(-3); у=4
Ответ: (-3;4)

Автор ответа: НЕсиленВалгебре

Спс ;)

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