theorem tax_revenue_feeds_debt {G R Y r_B g b : ℝ} (_hY : 0 < Y) :
debtDynamics r_B g b (primaryDeficit G R Y) =
(r_B - g) * b + (G - R) / Y := by
simp only [debtDynamics, primaryDeficit]Government Tax Structure (Layer 3 of Macro Extension)