Multiple Choice Question (MCQ)

If a and b are positive integers such that a + b = 9, then

what is the value of \dfrac{b-9}{4a}

  1. ×

    -\dfrac{9}{2}

  2. ×

    -\dfrac{9}{4}

  3. -\dfrac{1}{4}

  4. ×

    \dfrac{1}{4}

  5. ×

    \dfrac{9}{4}

Collected in the board: Fractions

Steven Zheng posted 17 hours ago

Answer

  1. Since a + b = 9

    b-9 = -a

    \dfrac{b-9}{4a} =\dfrac{-a}{4a} =-\dfrac{1}{4}

    Therefore

    C is correct

Steven Zheng posted 17 hours ago

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