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

/* code_begins */

{{{
A=matrix(QQ, [[-3,6,-9],[1,-4,3],[2,5,-7]])
print A
b=vector([-46.725,19.571,-20.073])
B=matrix([b])
C=A.augment(B.transpose())
print C
C.add_multiple_of_row(2,1,-2)
print C
C.add_multiple_of_row(0,1,3)
print C
C.rescale_row(0,1/6)
print C
C.add_multiple_of_row(2,0,13)
print C
C.add_multiple_of_row(1,0,-4)
print C
C.rescale_row(2,1/-13)
print C
C.add_multiple_of_row(1,2,-3)
print C
C.rescale_row(0,1/-1)
print C
z = C[2,3]
y = C[1,3]
x = C[0,3]
print z,y,x
}}}

/* code_ends */

 * '''Solution by''': 
   * <Archana>, <Student>, <SNIST>