Solve the system by finding the reduced row-echelon form of the augmented matrix.

reduced row-echelon form:


How many solutions are there to this system?


If there is one solution, give its coordinates in the answer spaces below.
If there are infinitely many solutions, enter z in the answer blank for z , enter a formula for y in terms of z in the answer blank for y and enter a formula for x in terms of z in the answer blank for x.

If there are no solutions, leave the answer blanks for x , y and z empty.