Under what condition do the planes `bx-ay=n,cy-bz=l,az-cx=m` intersect in a line?

Under what condition do the planes bx-ay=n,cy-bz=l,az-cx=m interest in a line?

The planes bx-ay=n,cy-bz=l,az-cx=m intersect in a line if___

The planes bx - ay = n, cy - bz = I, az - cx= m intersect in a line if

The planes x=cy+bz,y=az+cx,z=bx+ay intersect in a line if (a+b+c)^(2) is equal to

If x,y and z are eliminated from the equations x=cy+bz, y=az+cx" and z=bx+ay, then a^(2)+b^(2)+c^(2)+2abc=

Given that the system of equations x=cy+bz ,y=az+cx , z=bx +ay has nonzero solutions and and at least one of the a,b,c is a proper fraction. abc is

Given that the system of equations x=cy+bz,y=az+cx,z=bx+ay has non-zero solutions and atleast one of a,b,c is a proper fraction. abc is-

Given that the system of equations x=cy+bz ,y=az+cx , z=bx +ay has nonzero solutions and and at least one of the a,b,c is a proper fraction. abc is

Given that the system of equations x=cy+bz,y=az+cx,z=bx+ay has non-zero solutions and atleast one of a,b,c is a proper fraction. a^2+b^2+c^2 is