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

/* code_begins */

{{{
x, y, z = var ('x,y,z')
c=solve([-x+3*y-2*z==7, 3*x+3*y==-3, 2*x+y+2*z==-1], x, y, z)
print c

}}}

/* code_ends */

 * '''Solution by''': 
   * <Shahid Farooqui>, <Systems Administrator>, <IIT Bombay>