proposition: Lemma minusNonnegativeRationals_correct_l : ∏ x y z : NonnegativeRationals, x = y + z -> z = x - y.
proof: Proof. intros x y z ->. now rewrite plusNonnegativeRationals_minus_l. Qed.
imports: UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Sets UniMath.MoreFoundations.Orders UniMath.RealNumbers.Sets UniMath.RealNumbers.Fields UniMath.Algebra.DivisionRig UniMath.OrderTheory.Lattice.Lattice UniMath.RealNumbers.Prelim