||'''Book'''|| Linear Algebra ||
 ||'''Author'''|| Gilbert Strang ||
 ||'''Edition'''||  ||

/* code_begins */

{{{
a=matrix([[2,1,1],[4,-6,0],[-2,7,2]])
b=matrix([[5],[-2],[9]])
x=a.solve_right(b)
print x
}}}

/* by using a.solve_right(b) function we can get the problem directly  */

 * '''Solution by''': 
   * <satheshchandra>, <student>, <vits>
   * <Your Name>, <Profession>, <Organization>