Question 930200
{{{((4x+4y) /(12x^3y^2)) /(( -2x-2y )/( 6xy))}}}


{{{(4(x+y) /(12x^3y^2)) /(-2( x+y )/ (6xy))}}}


{{{(cross(4)cross((x+y)) /(cross(12)3x^3y^2)) /(-cross(2)1cross(( x+y)1 )/ (cross(6)3)xy)}}}


{{{(1/(3x^3y^2)) /(-1/ (3xy))}}}


{{{(cross(3)cross(x)cross(y)1) /(-(cross(3)x^cross(3)^2y^cross(2))))}}}


{{{-1 /(x^2y)}}}