||'''Book'''|| Advanced Engineering Mathematics ||
 ||'''Author'''|| Erwin Kreyszig ||
 ||'''Edition'''|| 8th Edition ||

/* code_begins */

{{{
A=matrix([[1,1,-1],[0,8,6],[-2,4,-6]]) # Coefficients of the variables
print 'Matrix=\n',A
b = vector([9,-6,40]) 
sol = A.solve_right(b)# Solution of the Matrix
A * sol
x, y,z = var('x, y,z')
print "\nResult of the Expressions:"
solve([1*x+1*y-1*z==9, 
       0*x+8*y+6*z==-6,
      -2*x+4*y-6*z==40], x, y,z)# Displaying the Values of x ,y and z
}}}

/* code_ends */

 * '''Solution by''': 
   * Goheja Mahesh S, Diploma Student, Pravara Polytechnic Loni-413637