The reduced row-echelon form of the augmented matrix for a system of linear equations with variables x1, ... , x5 is given below. Determine the solutions for the system and enter them below.

1 0 0 -3 -3 = 4
0 1 0 -2 -5 =-1
0 0 0 0 0 = 0
If the system has infinitely many solutions, your answer may use expressions involving the parameters r, s, and t.

Please help, it's very urgent.