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The product of two rational numbers is -1. If one of the numbers is -17/8, find the other number.

Mathematics

ScanSolve AI Answer

Answer

817\frac{8}{17}

Step-by-step solution

4 steps
  1. Let the two rational numbers be aa and bb.

    We are given that the product of two rational numbers is −1-1.
    So, a×b=−1a \times b = -1

  2. We are given one of the rational numbers as −178\frac{-17}{8}.

    Let a=−178a = \frac{-17}{8}.
    Substitute this value into the equation:

    −178×b=−1\frac{-17}{8} \times b = -1
  3. To find the second rational number bb, divide the product by the given rational number.

    b=−1÷(−178)b = -1 \div \left(\frac{-17}{8}\right)

    To divide by a fraction, multiply by its reciprocal:

    b=−1×8−17b = -1 \times \frac{8}{-17}
  4. Multiply the numbers.

    b=−1×8−17b = \frac{-1 \times 8}{-17} b=−8−17b = \frac{-8}{-17}

    When both the numerator and the denominator are negative, the fraction is positive.

    b=817b = \frac{8}{17}

    The second rational number is 817\frac{8}{17}.

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