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3729284749
@3729284749
July 2022
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помогите решить номер 821!!!!!!
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560цнгдсн
4(7-5х)-(12-20х)=28-20х-12+20х=16
2(3х-y)-(5x-2y)=6x-2y-5x+2y=x
6(x+2y)-3(2x+y)=6x+12y-6x -3y=9y
5(4x+y)-2(x-y)=20x+5y-2x+2y=18x+7y
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Answers & Comments
2(3х-y)-(5x-2y)=6x-2y-5x+2y=x
6(x+2y)-3(2x+y)=6x+12y-6x -3y=9y
5(4x+y)-2(x-y)=20x+5y-2x+2y=18x+7y