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

(−4)×(7/5)×(−3/4)÷(7/15)


(1 point)
Responses

−9
negative 9

−14775
negative Start Fraction 147 over 75 End Fraction

14775
Start Fraction 147 over 75 End Fraction

9

1 answer

To solve the expression \((−4)×(7/5)×(−3/4)÷(7/15)\), we can follow these steps:

  1. Multiply the first two numbers: \[ (−4) × (7/5) = \frac{−4 × 7}{5} = \frac{−28}{5} \]

  2. Multiply the result by the next number: \[ \frac{−28}{5} × (−3/4) = \frac{−28 × (−3)}{5 × 4} = \frac{84}{20} \]

  3. Simplify \(\frac{84}{20}\): \[ \frac{84}{20} = \frac{21}{5} \quad \text{(dividing both the numerator and denominator by 4)} \]

  4. Now divide by \((7/15)\): \[ \frac{21}{5} ÷ \frac{7}{15} = \frac{21}{5} × \frac{15}{7} \]

  5. Multiply the fractions: \[ = \frac{21 × 15}{5 × 7} = \frac{315}{35} \]

  6. Simplify \(\frac{315}{35}\): \[ = 9 \]

Therefore, the final answer is \(9\).

So, from the options provided, the correct response is:

9