Add the following expressions using horizontal method :
`x - 2y - z , x + y + z and -x +y +2z `

Add : 8x - 3y + 7z, -4x + 5y - 4z, -x - y - 2z

Solve the following linear equations using the matrix method: x+y + z = 9,2x + 5y + 7z = 52, 2x + y-z = 0

Solve the following equations by matrix method. 2x + y + z = 1, x - 2y - 3z=1 and 3x + 2y +4z=5

Solve the following system of equation by matrix method x + y - 2z = 1; x - y + z = 0; 2x + 3y - 4z = 2,

Solve the following system of linear equations using matrix method : 3x + y + z = 1, 2x + 2z =0, 5x + y + 2z = 0 .

Solve system of linear equations, using matrix method, x - y + z = 4" " 2x + y - 3z = 0" " x + y + z = 2

Solve the following system of equations using matrix method: 2/x + 3/y + 10/z = 4 4/x - 6/y + 5/z=1 6/x + 9/y - 20/z=2

Solve system of linear equations, using matrix method, 2x + 3y +3z = 5" " x-2 y + z =-4" " 3x-y - 2z= 3

Solve system of linear equations, using matrix method, 2x + 3y +3z = 5 x-2 y + z =-4 , 3x-y - 2z= 3

Solve the following system of equations by matrix method. 3x-2y + 3z= 8 2x + y-z = 1 4x-3y + 2z = 4