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

  • question_answer
    What is the value of k in the equation\[\frac{8}{7}=\frac{3}{4}(k-1)\]

    A)   \[\frac{3}{2}\]                        

    B)  \[\frac{53}{21}\]

    C)  \[\frac{8}{21}\]                                    

    D)  None of these

    Correct Answer: B

    Solution :

    (b) \[\frac{8}{7}=\frac{3}{4}\left( K-l \right)\Rightarrow \left( K-1 \right)=\frac{8}{7}\times \frac{4}{3}=\frac{32}{21}\] \[\Rightarrow \]\[K=\frac{32}{21}+1=\frac{53}{21}\] Note: Student is advised to cross ? check


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