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sveta2004gub
@sveta2004gub
July 2022
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Помогите!
Очень нужно, тест по математике 7 класс
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mayyadenisova
Ответ будет таков: 3/4 ( буду писать, потому что не меньше 20 символов)
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mayyadenisova
0.9х-4.5/0.3х(2)-7.5у(2)=0.9(х-5у)/0.3(х(2)-25у(2)=0.9(х-5у)/0.3(х-5)(х+5)=0.9/03.(х+5у); при х+5у=4=>0.9/0.3*4=0.9/1.2=0.75=3/4
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