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  3. 7th Class
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  5. Simple Equations

7th Class Mathematics Simple Equations Question Bank Linear Equation in one Variable

  • question_answer
    7 subtracted from \[\frac{5}{2}\] of a number results in 23, then what is the number?

    A)  \[-10\]                          

    B)  10            

    C)  12            

    D) \[-12~\]

    Correct Answer: C

    Solution :

    (c) Let the number be x. \[\Rightarrow \frac{5x}{2}-7=23\]            \[\Rightarrow \frac{5x}{2}=23+7\] \[\Rightarrow \,\,x=30\times \frac{2}{5}=12\]                  


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