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
9

-9
-9

−14/775
negative 147 over 75

14/775

1 answer

To solve the expression \((-4) \times \left(\frac{7}{5}\right) \times \left(-\frac{3}{4}\right) \div \left(\frac{7}{15}\right)\), we will follow the order of operations:

  1. First, we need to rewrite the division as multiplication by the reciprocal:

\[ (-4) \times \left(\frac{7}{5}\right) \times \left(-\frac{3}{4}\right) \times \left(\frac{15}{7}\right) \]

  1. Now we can combine the terms:

\[ (-4) \times (-3) \times \left(\frac{7}{5}\right) \times \left(\frac{15}{4}\right) \]

  1. Multiply the negative numbers:

\[ (-4) \times (-3) = 12 \]

  1. Now we have:

\[ 12 \times \left(\frac{7}{5}\right) \times \left(\frac{15}{4}\right) \]

  1. Multiply \(12\) by \(\frac{7}{5}\):

\[ 12 \times \frac{7}{5} = \frac{84}{5} \]

  1. Now multiply that result by \(\frac{15}{4}\):

\[ \frac{84}{5} \times \frac{15}{4} = \frac{84 \times 15}{5 \times 4} \]

  1. Calculate the numerator and denominator:

\[ 84 \times 15 = 1260 \quad \text{and} \quad 5 \times 4 = 20 \]

So we have:

\[ \frac{1260}{20} \]

  1. Now we can simplify \(\frac{1260}{20}\):

\[ \frac{1260 \div 20}{20 \div 20} = \frac{63}{1} = 63 \]

Thus, the final answer to the expression is:

\[ 63 \]

None of the provided responses are correct based on the computed answer.