Final Answer
$-\frac{3}{4}$$\,\,\left(\approx -0.75\right)$
Step-by-step explanation
Problem to solve:
$\left(\left(-1\right)\cdot \frac{27}{64}\right)^{\frac{1}{3}}$
1
We can take out the minus sign from $\sqrt[3]{-\frac{27}{64}}$
$-\frac{3}{4}$
Final Answer
$-\frac{3}{4}$$\,\,\left(\approx -0.75\right)$