Express the following equations in the matrix from and solve them by method of reduction :
`2x-y+z=1, x+2y+3z=8, 3x+y-4z=1`

Express the following equation in matrix form and solve them by the method of reduction: 2x-y+z = 1 , x+2y+3z = 8 and 3x+y-4z = 1

Express the following equation in matrix form and solve them by the method of reduction: x-y+z = 1 , 2x-y = 1 , 3x+3y-4z = 2

Express the following equations in matrix form and solve them by the method of reduction : x+y+z=6,3x-y+3z=6and5x+5y-4z=3 .

Express the following equation in matrix form and solve them by the method of reduction: x+2y-z = 2 , 3x+y-4z = 8 , 2x-y = 1 .

Express the following equation in matrix form and solve them by the method of reduction: 4x+2y-z =3 , x-2y+z = -8 , 2x-y+z = -7 ,