Предмет: Алгебра, автор: nadiyyyka

Допоможіть будьласка

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Автор ответа: Katya211399
1

Відповідь:

Пояснення:

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Автор ответа: nanssx
1

Б.

x + y = 9

4x - y = 6

3 + 6 = 9

4×3 - 6 = 6

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