Предмет: Математика, автор: Зализан

ПЛИИЗ!!!!!
Решите систему уравнений:
У=1-7х
4х-у=32

Ответы

Автор ответа: Peppe
0
1. у+7х=1
   4х-у=32
2. складываем
11х=33
х=3
3. подставляем в любое уравнение ситемы
12-у=32
у=12-32
у= -20
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