∀ (R : Type uR) {S : Type uS} {A : Type uA} [inst : CommSemiring R] [inst_1 : CommSemiring S] [inst_2 : Algebra R S]
  [inst_3 : Semiring A] [inst_4 : Algebra R A] (s : S) (a : A),
  (Algebra.TensorProduct.commRight R S A).symm (a ⊗ₜ[R] s) = s ⊗ₜ[R] a