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

/* code_begins */

{{{
x, y, z = var('x, y, z') 
solve([0*x+6*y+13*z==61, 6*x+0*y-8*z==-38, 13*x-8*y+0*z==79], x, y, z)
}}}

/* code_ends */

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