augmented matrix

The reduced row echelon form of the augmented matrix of a system of equations is given. Find the solutions of the system.

1 0 0 4 14

0 1 0 3 -7

0 0 1 0 -8

0 0 0 0 0

Enter the solutions of the system below. Use w for the parameter.

x=

y=

z=

w is a real number.