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March 25, 2017

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I need some help with this math problem.

Multiply 31/6 * 9/11 * 6/17. Writre your answer to simplest form.

Answer: 171/187 is this correct? Please help

  • Math - ,

    31 * 9 * 6
    -----------
    6 * 11 * 17

    Now 31, 11 and 17 are prime numbers, so we are stuck with them. However we can divide top and bottom by 6, common factor.

    31 * 9
    -------
    11 * 17

    = 279/187

  • Math - ,

    This is the problem
    3 1/6 * 9/11 * 6/17
    I have to choose
    A. 1 1/170
    B. 27/187
    C. 1 171/187
    D. 171/187

    I choose D

  • Math - ,

    Multiply the numerators and denominators across.

    Then simplify your fraction to the lowest term.

    31/6 x 9/11 x 6/17 =

    31 x 9 x 6 = 1674 (our numerator product)

    6 x 11 x 17 = 1122 (our denominator product)

    We now have:

    1674/1122 as the new fraction.

    When reduced to the lowest term we get:

    279/187

    Done!

  • Math - ,

    Oh, now you say 3 1/6 or 19/6
    first you said 31/6
    so
    19/6 * 9/11 * 6/17
    get rid of the 6 as before
    19*9/(11*17) = 171/187

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