Subject

    গাণিতিক যুক্তি

    Topic

    সমাধান

    (a/b)x-3=(b/a)x-5হয় তবে x এর মান কত?

    ক)
    8
    খ)
    3
    গ)
    5
    ঘ)
    4

    Explanation

    {a x-3 /b x-3 } = {b x-5 /a x-5 } cross multiplication of both sides of the equation gives us (a x-3 )(a x-5 ) = (b x-5 )(b x-3 ) a x-3+x-5 = b x-5+x-3 a 2x-8 = b 2x-8 (a/b) 2x-8 =1 (a/b) 2x-8 =(a/b) 0 2x-8 = 0 x = 4

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