Here is a walk-through example of how to do a problem like this:
1 : Use rules of exponents to rewrite the following expression without any fractions (using negative exponents if needed).
2 : Use rules of exponents to rewrite the following expression without any fractions (using negative exponents if needed).
3 : Use rules of exponents to rewrite the following expression without any fractions (using negative exponents if needed).
4 : Use rules of exponents to rewrite the following expression without any fractions (using negative exponents if needed).