Question 45456
(27x^-3)^-1/3

The "negative" in the exponent means to invert.
The "1/3" in the exponent means to take the cube root.

=(27)^(-1/3)*(x^-3)^(-1/3)

= (3)^-1 *(x^1)
=(1/3) x

Cheers,
Stan H.