Question 641769

{{{(-3d^3y^4)(9d^4)/(-8d^5y^3)(-2d^3y^4)}}}

{{{(-27d^7y^4)/(16d^8y^7)}}}

{{{(-27cross(d^7)cross(y^4))/(16d^cross(8)^1y^cross(7)^3)}}}


{{{-27/(16dy^3)}}}