Предмет: Математика, автор: sevil42

Найдите значение х и у

Приложения:

Ответы

Автор ответа: TheCleverOlya

1

Ответ:

(1;2)

Пошаговое объяснение:

у+2х=4

3у+2х=5у-2х

1)2х=4-у

2)2х+2х=5у-3у

4х=2у | :2

2х=у

4-у=у

4=у+у

4=2у

2=у

2х=4-у

2х=4-2=2

х=2/2=1

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