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Опубликовано 4 года назад по предмету Математика от liza23333

а)5d=-85,6-3d
б)5b - 5b+1=1b+1
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  1. Ответ
    Ответ дан ConsuLX

    а) 5d=-85,6-3d

    8d+85.6=0

    d=-85.6/8

    d=-10.7


    б) (5b)/6-(5b+1)/9=(1b)/2+1//3

    (5//6)b-(5*b/9+1/9)-b/2-(1//3)=0

    (5//6)b-((5//9)b+(1//9))-b/2-(1//3)=0

    (5//18)b-(1//9)-b/2-(1//3)=0

    -(2//9)b-(1//9)-(1//3)=0

    -(2//9)b-(4//9)=0
    b=(4//9)/(-(2//9))
    b=-2

    // - черта дроби