Working with Negative Exponents x n = 1 x n and 1 x n = x n You can eliminate negative exponents by rewriting the expression as 1, divided by the variable or number raised to the related positive exponent. Complete this expression. y p = Simplify the following expression completely. 10 w 15 = The Fraction Raised to a Negative Exponent Rule When you have a fraction raised to a negative exponent, you can simply replace it with the reciprocal of the fraction to a positive exponent. ( a b ) n = ( b a ) n Simplify the following. ( 5 3 ) 3 =