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1juliaza
@1juliaza
June 2023
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2 последних очень срочно даю 100 б
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marialifff
5) x-стоил футбольный,0,8х-стал стоить у-стоил волейбольный,1,05у-стал
СТОИТЬ
4x+3y=320/-0,4 ⇒-1,6x-1,2y=-128 2*0,8x+1,05y=122 →1,6x+1,05y=122
-0,15y=-6
|y=40
4x=320-120
4x+120=320 |x=50
4x=200
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Answers & Comments
СТОИТЬ
4x+3y=320/-0,4 ⇒-1,6x-1,2y=-128 2*0,8x+1,05y=122 →1,6x+1,05y=122
-0,15y=-6
|y=40
4x=320-120
4x+120=320 |x=50
4x=200