Question

Evaluate the following:

$\left[\frac{3}{-5}\times (-7)\right]\times \left[\frac{4}{7}÷\frac{2}{-7}\right]$

Answer 1

$\left[\frac{3}{-5}\times (-7)\right]\times \left[\frac{4}{7}÷\frac{2}{-7}\right]$

$$\begin{gathered} =\left[\frac{3\times (-7)}{-5}\right]\times \left[\frac{4}{7}\times \frac{-7}{2}\right] \\ =\frac{-21}{-5}\times -2 \\ =\frac{42}{-5} \\ =-8\frac{2}{5} \end{gathered}$$

result is $-8\frac{2}{5}$