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7th Class Mathematics Integers Question Bank Number System

  • question_answer
    What should be subtracted from \[\left( \frac{3}{4}-\frac{6}{16}+\frac{5}{24} \right)\,\]to get \[\frac{7}{32}\]?

    A)  \[\frac{7}{12}\]                        

    B)  \[\frac{35}{96}\]

    C)  \[\frac{-5}{96}\]                                   

    D)  \[\frac{77}{96}\]

    Correct Answer: B

    Solution :

    (b): Let 'x' be subtrahend \[\therefore \left( \frac{3}{4}-\frac{6}{16}+\frac{5}{24} \right)-x=7/32\] \[\Rightarrow \frac{3}{4}-\frac{6}{16}+\frac{5}{24}-7/32=x\] \[\Rightarrow \frac{72-36+20-21}{96}=x\] \[\Rightarrow \frac{35}{96}=x\].


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