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Maria123411
@Maria123411
August 2022
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найдите решение системы уравнений способом ну { 7х+2у=9, {5х+2у=11
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gksoso
7x+2y=9 /*(-1)5x+2y=11-7x-2y=-9+5x+2y=11_______-2x=2/:(-2)x=-15*(-1)+2у=112у=11+52у=16 / : 2у=8
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