6xy+12xz+9yz=3xyz Solve for z.
6xy + 12xz + 9yz = 3xyz. Original equation 2xy + 4xz + 3yz = xyz Factor out the common 3's 2xy = xyz - 4xz - 3yz Put all z'on same side of the equation 2xy = z(xy-4x-3y) Factor out the common z's z = 2xy / (xy-4x-3y) Divide for z
