∀ {X : Type u_1} {E : Type u_3} {mX : MeasurableSpace X} [inst : NormedAddCommGroup E] [inst_1 : NormedSpace ℝ E]
  {f : X → E} {s : Set X} {μ : MeasureTheory.Measure X},
  MeasureTheory.NullMeasurableSet s μ →
    MeasureTheory.Integrable f μ → ∫ (x : X) in sᶜ, f x ∂μ = ∫ (x : X), f x ∂μ - ∫ (x : X) in s, f x ∂μ