Rewrite the expression with a positive rational exponent Sim
     Rewrite the expression with a positive rational exponent Simplify. if possible.  (27/343)^-1/3 Rewrite the expression.  (27/343)^-1/3 =  (Use integers or factions for any numbers in the expression. Type experimental notation with positive exponents. Do not simplify. 
  
  Solution
[27/343]-1/3
=[(343/27)-1]-1/3
=(343/27)-1*(-1/3)
=(343/27)1/3
=(73/33)1/3
=((7/3)3)1/3
=(7/3)3*(1/3)
=(7/3)1
=7/3

