There are not independent source in the circuit. ∴ The Thevenin and Norton equivalent will have 0 A and 0 V sources. To find R_TH, a 1 A source is connected as Writing a nodal equations at n, 0.01V_x + 0.003V_x + 0.0067V_x = 1 0.017V_x = 1 ∴ V_x = 58.82 V