y=2x, z=3x
x+y+z=6x=66
x=11 y=22 z=33
(3x^2y^2+8x^2z^2-12y^2z^2)/(xyz)
=3xy/z +8xz/y -12yz/x
=3*1*2/3 +8 *1*3/2 -12*2*3/1
=2+12-72
=-58
y=2x, z=3x
x+y+z=6x=66
x=11 y=22 z=33
(3x^2y^2+8x^2z^2-12y^2z^2)/(xyz)
=3xy/z +8xz/y -12yz/x
=3*1*2/3 +8 *1*3/2 -12*2*3/1
=2+12-72
=-58