Rewrite the expression with positive exponents: 1/3x-3

1/3x ^-3

To rewrite the expression with positive exponents, we need to move the negative exponent to the denominator.

In this case, the negative exponent is -3. To move it to the denominator, we can write the expression as 1 / (3x^3).

Now the negative exponent becomes positive, and the expression is written in a simplified form with positive exponents.