The reduced row echelon form of a system of linear equations is given. Write the system of equations corresponding to the given matrix. Use x, y;x,y; or x, y, z;x,y,z; or \(\displaystyle{x}_{{{1}}},{x}_{{{2}}},{x}_{{{3}}},{x}_{{{4}}}\) as variables. Determine whether the system is consistent or inconsistent. If it is consistent, give the solution.

\(\begin{bmatrix}1&0&0&0&|&1 \\0&1&0&0&|&2 \\0&0&1&2&|&3 \end{bmatrix}\)