$-\frac{ 3 }{ 4 } \times \frac{ -2 }{ 5 }$
Use $\frac{ -a }{ b }=\frac{ a }{ -b }=-\frac{ a }{ b }$ to rewrite the fraction$-\frac{ 3 }{ 4 } \times \left( -\frac{ 2 }{ 5 } \right)$
Multiplying two negatives equals a positive: $\left( - \right) \times \left( - \right)=\left( + \right)$$\frac{ 3 }{ 4 } \times \frac{ 2 }{ 5 }$
Cancel out the greatest common factor $2$$\frac{ 3 }{ 2 } \times \frac{ 1 }{ 5 }$
Multiply the fractions$\begin{align*}&\frac{ 3 }{ 10 } \\&0.3\end{align*}$