October 2021 0 5 Report
{x+y=5 2x-y=7
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Ответ:

Пошаговое объяснение:{х=5-у. 2*(5-у)-у-7=0;

{х=5-у, 10-2у-у-7=0;

{х=5-у, 3-у=0;

{х=5-у, у=3;

{х=2, у=3

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