Write the symmetric form of equation of the following lines : `4x+4y-5z-12=0=8x+12y-13z-32,`

Write the symmetric form of equation of the following lines : ax+by+d=0,5z=0

Write the symmetric form of equation of the following lines : x-2y=3,2x+y-5z=0,

Write the symmetric form of equation of the following lines : y = b, z = c

Write the symmetric form of equation of the following lines : 3x-2y+z=1,5x-4y-6z=2.

Using the method of elemination find the symmetrical form of equation of the line 6x+8y+3z = 10 and x+2y+z = 3 .