Предмет: Алгебра, автор: deko1412

Решите системы уравнений способом сложения:
m+n=2
m-n=6

Ответы

Автор ответа: vityamath

1

$m+n=2\\m-n=6\\m+n+m-n=2+6\\2m=8\\m=4\\$

Подставим m и найдем n

$m-n=6\\4-n=6\\-n=2\\n=-2$

Ответ: (4;-2)

deko1412: спасибо большое !

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