have : p ≤ q := le_cases.mpr this
ℕ ℤ ℚ : Type
inst✝¹⁰ : Natural ℕ
inst✝⁹ : Integer ℤ
inst✝⁸ : Core ℚ
inst✝⁷ : Addition ℚ
inst✝⁶ : Multiplication ℚ
inst✝⁵ : Negation ℚ
inst✝⁴ : Sign ℚ
inst✝³ : Subtraction ℚ
inst✝² : Reciprocation ℚ
inst✝¹ : Division ℚ
inst✝ : Order ℚ
p q : ℚ
OneOfThree : Prop := AA.OneOfThree (p < q) (p ≃ q) (p > q)
this✝ : OneOfThree
b✝ : p ≃ q
this : p < q ∨ p ≃ q
⊢ p ≤ q ∨ q ≤ p
ℕ ℤ ℚ : Type
inst✝¹⁰ : Natural ℕ
inst✝⁹ : Integer ℤ
inst✝⁸ : Core ℚ
inst✝⁷ : Addition ℚ
inst✝⁶ : Multiplication ℚ
inst✝⁵ : Negation ℚ
inst✝⁴ : Sign ℚ
inst✝³ : Subtraction ℚ
inst✝² : Reciprocation ℚ
inst✝¹ : Division ℚ
inst✝ : Order ℚ
p q : ℚ
OneOfThree : Prop := AA.OneOfThree (p < q) (p ≃ q) (p > q)
this✝¹ : OneOfThree
b✝ : p ≃ q
this✝ : p < q ∨ p ≃ q
this : p ≤ q
⊢ p ≤ q ∨ q ≤ p