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lubhov
@lubhov
July 2022
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Решите систему уравнений 5х-у=7;
3х+2у=-1
Плееееееееееес
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monicgh
5х - у =7
3х + 2у = - 1
=> у = 5х - 7 => 2у = 10х - 14
3х + 2у = 3х + 10х - 14 = - 1
13х = 13 => х = 1 => 5*1 - у = 7 => у = - 2
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Answers & Comments
3х + 2у = - 1
=> у = 5х - 7 => 2у = 10х - 14
3х + 2у = 3х + 10х - 14 = - 1
13х = 13 => х = 1 => 5*1 - у = 7 => у = - 2