A new approach to the row by row decoupling of singular systems via state feedback and regular input transformation is presented. The proposed method is based on the matrix fraction description of the system and is an extension of the frequency domain method for strictly proper systems. The solvability condition of the problem is readily obtained from the ’numerator’ matrix of a coprime and column reduced matrix fraction description of the given system. Pole placement and decoupling is also considered, and the characterization of the fixed poles is given.