Vectors help please

An the plane Q: x-2y+z+6

Where is the = ?

Also can some1 check this:

Find the equation of the plane joining the point x=(0,4,1) y=(1,-2,2) z=(-3,1,-1)

I got 9x-5y+21z+41=0

can some1 check this answer please

Q) L= (x-1)=(y-2)=(z-1)/2

M= (x-6)/3 = (y-3)/-1 = (z-3)/-2

find the equation of the plane containing the lines L and M.

first I found the point of intersection of the 2 lines to be (3,4,5).

then I found the equation of the plane to be: 8y-4z-8=0