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7th Class Mathematics Rational Numbers Question Bank Rational Numbers

  • question_answer
    The value of x such that \[-\frac{3}{8}\] and \[\frac{x}{-24}\] are equivalent rational numbers is____.  

    A)  64                              

    B)  \[-64\]

    C)         \[-9\]              

    D)         9                    

    Correct Answer: D

    Solution :

    \[\frac{-3}{8}=\frac{x}{-24}\,\,\,\Rightarrow \,\,\frac{-3}{8}\times \frac{3}{3}=\frac{-x}{24}\] \[\Rightarrow \]            \[\frac{-9}{24}=\frac{-x}{24}\,\,\,\Rightarrow \,\,\,\,x=9\]


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