∀ {α : Type u_2} [inst : AddCommMonoid α] [inst_1 : PartialOrder α] [IsOrderedCancelAddMonoid α] [ExistsAddOfLE α]
  [inst_4 : LocallyFiniteOrder α] [inst_5 : DecidableEq α] (a b c : α),
  Finset.image (fun x => c + x) (Finset.Ioo a b) = Finset.Ioo (c + a) (c + b)