Предмет: Алгебра, автор: maximkhoroshev5

9x+2y=16 3x-5y=11 решить систему уравнений

Ответы

Автор ответа: VоЛk

6

Умножим второе уравнение на -3;
{9х+2у=16
{-9х+15у=-33
Плюсуем...
17у=-17
у=-1

3х+5=11
3х=6
Х=2

Ответ: (2;-1)

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