Question 1015328
{{{(16/81)^(-3/4)=(2^4/3^4)^(-3/4)=((2/3)^4)^(-3/4)=(2/3)^(4*(-3/4))=(2/3)^(-3)=(1/((2/3)))^3=(3/2)^3=3^3/2^3=27/8)}}}