Use the properties of operations and rules for multiplying and dividing to solve:

(−3/5) × (5/16) × (7/12) ÷ (−3/16) × (−5/7)


(1 point)
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1 answer

To solve the expression \((-\frac{3}{5}) \times (\frac{5}{16}) \times (\frac{7}{12}) \div (-\frac{3}{16}) \times (-\frac{5}{7})\), we can simplify step by step.

  1. Rewrite the division as multiplication by the reciprocal:
    The division of fractions can be rewritten by taking the reciprocal of the divisor: \[ \div (-\frac{3}{16}) \quad \text{becomes} \quad \times (-\frac{16}{3}) \] So the expression now looks like this: \[ (-\frac{3}{5}) \times (\frac{5}{16}) \times (\frac{7}{12}) \times (-\frac{16}{3}) \times (-\frac{5}{7}) \]

  2. Combine the factors:
    We can multiply all the fractions together: \[ (-\frac{3}{5}) \times (\frac{5}{16}) \times (\frac{7}{12}) \times (-\frac{16}{3}) \times (-\frac{5}{7}) = \frac{(-3) \times 5 \times 7 \times (-16) \times (-5)}{5 \times 16 \times 12 \times 3 \times 7} \]

  3. Calculating the numerator and denominator:

    • Numerator:
      \((-3) \times 5 \times 7 \times (-16) \times (-5)\) equals: \[ 3 \times 5 \times 7 \times 16 \times 5 = 3 \times 5^2 \times 7 \times 16 = 3 \times 25 \times 7 \times 16 \]
    • Denominator:
      \(5 \times 16 \times 12 \times 3 \times 7\)
  4. Cancelling out common factors:
    We notice:

    • The \(5\) in the numerator and denominator cancels.
    • The \(7\) in the numerator and denominator cancels.
    • The \(3\) cancels with the multiple in the denominator.
    • The \(16\) cancels with the multiple in the denominator.

    After all cancellations, we can look at the simple ratios remaining.

  5. Final multiplication:
    \(\frac{3 \times 5 \times 7 \times 16 \times 5}{5 \times 16 \times 12 \times 3 \times 7}\) reduces down to a simple multiplication of whatever remains.

Now calculate directly: Using remaining terms leads us to: \[ \frac{1}{12} \]

So, the final answer is: \[ \frac{1}{12} \]