Question

Find the equation of the plane passing through the intersection of the plane 3x+2y-z+1=0 andx+y+2x-z=0 and the point (2,2,1)

Answer 1

Answer:

3x+2y-z+1=0+x+y+2x-z=0

2x-x+2y-y-z+z+1-0+0

x+y-z