Answer:
[tex] - \frac{125}{27} [/tex]
make
[tex]( { \frac{ - 3}{5} })^{ - 3}[/tex]
the exponent postive by flipping the fraction around
[tex]( { \frac{5}{ - 3} })^{3} [/tex]
then simpify and you get
[tex] - 4 \frac{17}{27} [/tex]
or for a single fraction
[tex] - \frac{125}{27} [/tex]
