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arzu30
@arzu30
August 2022
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найдите значение выражения:1)5а-15б,при а-3б=-28 2)-8x-12y,при 2x+3y=9
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наталияандреева
1)5а-15б=5(а-3б)=5*(-28)=-140
2)-8х-12у=-4(2х+3у)=-4*9=-36
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Answers & Comments
2)-8х-12у=-4(2х+3у)=-4*9=-36