Helpp giúp em đi chiều em đi học rồi

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Helpp giúp em đi chiều em đi học rồi

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    `x/4=6/(-3)`

    `=>x/4=-2`

    `=>x=(-2) . 4`

    `=>x=-8`

    vậy `x=-8`

    `x/(-6)=5/2`

    `=>2x=5 . (-6)`

    `=>2x=-30`

    `=>x=(-30) : 2`

    `=>x=-15`

    vậy `x=-15`

    `(-2)/5=8/x`

    `=>-2x=8 . 5`

    `=>-2x=40`

    `=>x=40 : (-2)`

    `=>x=-20`

    vậy `x=-20`

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