The following matrix is in reduced row echelon form. Decode from the matrix the solution of the corresponding system of linear equations or state that the system is inconsistent. (If the system is dependent assign the free variables the parameters s and t. If the system is inconsistent, enter INCONSISTENT.) 1 0-4 5 2 0 1 2 -9 3 10 -4 5 21 o 0 00 0 (xi, X2, X3, x4)- X1, X2, X3, X4) =