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Nata19996894
@Nata19996894
July 2022
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Решить систему уровнений .
5x-2y=7
3x+4y=25
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SilverAnanas
Надеюсь,понятно
Ответ:y=4,x=3.
3 votes
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mara097z
\left \{ {{5x=2y+7} \atop {3x+4y=25}} \right.\left \{ {{x= \frac{2y+7}{5} } \atop {3x+4y=25}} \right.\left \{ {{x= \frac{2y+7}{5} } \atop {3* \frac{2y+7}{5}+4y=25}} \right.Рассматриваем нижнее6y+21+20y=12526y=104y=4;X= \frac{2*4+7}{5} =3[/tex]Ответ х=3, у=4
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Answers & Comments
Ответ:y=4,x=3.