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ladytohtarova
@ladytohtarova
August 2022
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5
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Решите систему способом подстановки
10х-4у-30=0
4х-2у=14
ПО ШАГОВО
ПРОШУ ПОБЫСТРЕЙ , заранее спасибо !
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kattyshmks
10х-4у=30
4х-2у=14 |•(-2)
10х-4у=30
-8х+4у=-28
2х=2
х=1
10•1-4у=30
-4у=20
у=-5
Ответ:у=-5;х=1
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Answers & Comments
4х-2у=14 |•(-2)
10х-4у=30
-8х+4у=-28
2х=2
х=1
10•1-4у=30
-4у=20
у=-5
Ответ:у=-5;х=1