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8 March, 13:48

Divide: 16/5 / - 2 2/5

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Answers (2)
  1. 8 March, 14:09
    0
    (-4) / 3

    Step-by-step explanation:

    Simplify the following:

    16 / (5 ( - (2 + 2/5)))

    Put 2 + 2/5 over the common denominator 5. 2 + 2/5 = (5*2) / 5 + 2/5:

    16 / (5 ( - (5*2) / 5 + 2/5))

    5*2 = 10:

    16 / (5 ( - (10/5 + 2/5)))

    10/5 + 2/5 = (10 + 2) / 5:

    16 / (5 ( - (10 + 2) / 5))

    10 + 2 = 12:

    (16/5) / (-12/5)

    (16/5) / ((12 (-1)) / 5) = 16 / (-12/5*5):

    16 / (-12/5*5)

    -12*5 = - 60:

    16 / ((-60) / 5)

    Multiply the numerator of 16 / ((-60) / 5) by the reciprocal of the denominator. 16 / ((-60) / 5) = (16*5) / (-60):

    (16*5) / (-60)

    5 / (-60) = 5 / (5 (-12)) = 1 / (-12):

    16 / (-12)

    The gcd of 16 and - 12 is 4, so 16 / (-12) = (4*4) / (4 (-3)) = 4/4*4 / (-3) = 4 / (-3):

    4 / (-3)

    Multiply numerator and denominator of 4 / (-3) by - 1:

    Answer: (-4) / 3
  2. 8 March, 15:37
    0
    The answer is - 4/3

    Step-by-step explanation:

    Let's divide 16/5 : 2 2/5, this way:

    16/5 : - 2 2/5

    16/5 : - 12/5

    16/5 * - 5/12

    -80/60

    Simplifying:

    -4/3 (Dividing by 20 in the numerator and in the denominator)

    The answer is - 4/3
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