Solve the following equations by the method of reduction
`2x-y+z=1, x+2y+3x=8, 3x+y-4z=1.`

Solve the following equations by method of reduction x-3y +z=2, 3x + y +z=1, 5x + y + 3z=3

Solve the following equations by using reduction method : 2x - y + z = 1, x + 2y + 3z = 8, 3x + y - 4z = 1 .

Solve the following equations (by matrix method) : 2x +y + z= 7, x - y - z=-4, 3x +2y+z= 10