Предмет: Математика, автор: sppdddocofo

зайчики куколки солнышки помогите

Приложения:

Ответы

Автор ответа: Аноним

Ответ:х=13,6 ; у=9,8.

Пошаговое объяснение:

х-2у=- 6 (1)

7х-9у=7 (2).

Из (1).

х=-6+2у.

Подставляем во (2).

7(-6+2у)-9у=7.

-42+14у-9у=7.

5у=49.

у=49/5=9 4/5=9,8.

х=- 6+2*9,8=-6+19,6=13,6.

Аноним: После нахождения корней , обязательно делай проверку.

Аноним: пиши, это система уравнений?

Аноним: где напишешь?

Аноним: можешь в кометах написать

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