no goals
α : Type u_1
inst✝³ : CompleteLattice α
inst✝² : Group α
inst✝¹ : CovariantClass α α (fun x x_1 => x * x_1) fun x x_1 => x ≤ x_1
inst✝ : CovariantClass α α (swap fun x x_1 => x * x_1) fun x x_1 => x ≤ x_1
s t : Set α
⊢ sSup (s / t) = sSup s / sInf t
simp_rw [div_eq_mul_inv, sSup_mul, sSup_inv]