Предмет: Математика, автор: Аноним

Решите систему способом сложения: х-у=-3 и 2у-х=6 ПОМОГИТЕ! СРОЧНО! ПОЖАЛУЙСТА!!

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Автор ответа: Султан12345
0
x=-3-y
-x=6-2y
6-2y=3+y
3y=3
y=3
x=-6
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