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giúp mình điiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

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    `3/5 – (47/20 – 2x) . 2/15 = 3/10`

    `<=> (47/20 – 2x) . 2/15 = 3/5 – 3/10`

    `<=> (47/20 – 2x) . 2/15 = 3/10`

    `<=> 47/20 – 2x = 3/10 : 2/15`

    `<=> 47/20 – 2x = 9/4`

    `<=> 2x = 47/20 – 9/4`

    `<=> 2x = 1/10`

    `<=> x = 1/10 : 2`

    `<=> x = 1/20`

    Vậy `x = 1/20`

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