To solve the expression \((-\frac{3}{5}) \cdot (\frac{5}{16}) \cdot (\frac{7}{12}) \div (-\frac{3}{16}) \cdot (-\frac{5}{7})\), we can break it down step by step:
Step 1: Simplify the expression before dividing.
First, we can rewrite the division as multiplication by the reciprocal:
\[ (-\frac{3}{5}) \cdot (\frac{5}{16}) \cdot (\frac{7}{12}) \cdot \frac{1}{(-\frac{3}{16}) \cdot (-\frac{5}{7})} \]
Step 2: Simplify the denominator.
The denominator can be simplified:
\[ (-\frac{3}{16}) \cdot (-\frac{5}{7}) = \frac{3}{16} \cdot \frac{5}{7} = \frac{3 \cdot 5}{16 \cdot 7} = \frac{15}{112} \]
Step 3: Rewrite the entire expression.
The expression now looks like:
\[ (-\frac{3}{5}) \cdot (\frac{5}{16}) \cdot (\frac{7}{12}) \cdot \frac{112}{15} \]
Step 4: Start multiplying the fractions in the numerator:
\[ =\frac{-3 \cdot 5 \cdot 7 \cdot 112}{5 \cdot 16 \cdot 12 \cdot 15} \]
Step 5: Cancel out common factors.
- The \(5\) in the numerator and denominator cancels: \[ =\frac{-3 \cdot 7 \cdot 112}{16 \cdot 12 \cdot 15} \]
Step 6: Calculate the numerator:
\[ -3 \cdot 7 = -21 \] \[ -21 \cdot 112 = -2352 \]
Step 7: Calculate the denominator:
\[ 16 \cdot 12 = 192 \] \[ 192 \cdot 15 = 2880 \]
Step 8: Put it all together:
Now we have:
\[ \frac{-2352}{2880} \]
Step 9: Simplify the fraction:
To simplify \(-2352/2880\), find the greatest common divisor (GCD) of \(2352\) and \(2880\).
The GCD is \(48\).
Dividing both the numerator and denominator by \(48\):
\[ -2352 \div 48 = -49 \] \[ 2880 \div 48 = 60 \]
Thus, the simplified fraction is:
\[ \frac{-49}{60} \]
Final Answer:
\(-\frac{49}{60}\)