Abstract: Unequal interpolation mixed displacement - pressure (u - p) elements are usually required to meet the Babuska - Brezzi stability conditions or Ziendiewicz - Taylor patch test. The stabilized u - p FEM presented in this paper make it possible to use equal interpolation u - p elements. A simp1e example is given to verify the methodology. As an application example, the simple linear triangle elements with equal interpolation for u and p are used to obtain the limit load of undrained soil slope by using the stabilized u - pFEM and adaptive remeshing.