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  5. Linear Equations in One Variable

8th Class Mathematics Linear Equations in One Variable Question Bank Linear Equations in one Variable

  • question_answer
    Find the value of x and y in the given equation \[\frac{x}{a}+\frac{y}{b}=a+b,\frac{x}{{{a}^{2}}}+\frac{y}{{{b}^{2}}}=2\]

    A)  \[x=a,y=b\]     

    B)  \[x={{a}^{2}},y={{b}^{2}}\]    

    C)  \[x=3a,\text{ }y=b\]                

    D)  \[x=a,y=2b\]

    Correct Answer: B

    Solution :

    (b): \[\frac{x}{a}+\frac{y}{b}=a+b\] \[\frac{x}{{{a}^{2}}}+\frac{y}{{{b}^{2}}}=2\] Solving for x, y, we get\[x={{a}^{2}},\,\,y={{b}^{2}}\].         


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