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8th Class Mathematics Algebraic Expressions Question Bank Algebra

  • question_answer
    If \[\frac{2}{x}+3y=15\] and \[\frac{5}{x}-4y=3\] the value of x is

    A) 1/2                              

    B) 2

    C) 1/3          

    D) 3

    Correct Answer: C

    Solution :

    Find \[{{a}^{3}}+{{b}^{3}}+{{c}^{3}}-3abc\] from equation (1) and put this value of y in equation (2). \[x:\frac{x-a}{b+c}+\frac{x-b}{c+a}+\frac{x-c}{a+b}=3\]                   


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