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7th Class Mathematics Rational Numbers Question Bank Rational Numbers

  • question_answer
    What should be subtracted from \[\frac{-1}{3}\]to get\[\frac{1}{6}\]?

    A)  \[\frac{1}{2}\]                         

    B)  \[\frac{-1}{2}\]

    C)  \[\frac{3}{4}\]                                     

    D)  \[\frac{-3}{4}\]

    Correct Answer: B

    Solution :

    (b) Let the number to be subtracted be 'x'. Then, \[\frac{-1}{3}-x=\frac{1}{6}\]                \[\Rightarrow \frac{-1}{3}=\frac{1}{6}+x\]          \[\Rightarrow x=\frac{-1}{3}-\frac{1}{6}=\frac{-2-1}{6}=\frac{-3}{6}=\frac{-1}{2}\]


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