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

/* code_begins */

{{{
R4=matrix([[4,0,5],[1,6,2],[8,2,1]])
print R4
p4=vector([12.5,18.5,-11.5])
x4=R4.solve_right(p4)
print x4
}}}

/* code_ends */

 * '''Solution by''': 
   * <C.Pratyusha>, <student>, <SNIST>
   * <Reepu kumari>, <student>, <SNIST>
   *<Renuka.Y>,<student>,<Snist>