Предмет: Алгебра, автор: anastasiyafoma

РЕШИТЕ СИСТЕМУ УРАВНЕНИЙ АЛГЕБРАИЧЕСКОГО СЛОЖЕНИЯ

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Автор ответа: Аноним

Умножаем первое уравнение на 5, второе на 12
х+у=10
х+2у=24
Из первого вычитаем второго:
-у=-14
у=14
х=10-14=-4
(-4;14)

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