Solve by matrix inversion method the following system of equations.
x + y + z = 6, x + 2z = 7, 3x + y + z = 12

Solve by matrix inversion method the following system of equations. x - y + z = 2 , 2x - y = 0, 2y -z = 1

Solve by matrix inversion method the following system of equations. 8x + 4y + 3z = 18, 2x + y + z = 5, x + 2y + z = 5

Solve by matrix inversion method the following system of equations. x + y - z + 3 = 0 , 2x + 3y + z = 2, 8y + 3z = 1

Using matrix inversion method,solve the following system of equations for x,y and zx+2y+z=8,2x+3y+2z=83x+2y+2z=13

Solve the following system of equations by Cramer's Rule: x+y+z=6,\ \ x+2z=7,\ \ 3x+y+z=12