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

/* code_begins */

{{{
A11= matrix([[2,5,7],[-5,7,2],[1,22,23]]) 
b11= vector([25,-4,71]) 
x11= A11.solve_right(b11) 
print x11 
}}}

/* code_ends */

 * '''Solution by''': 
   * Swati AHuja, Student, IIT Roorkee