Theorem: LO.FirstOrder.Arith.Model.le_add_add_left (Arithmetization/Vorspiel/Lemmata.lean)

State before:
M : Type u_1
inst✝⁵ : Zero M
inst✝⁴ : One M
inst✝³ : Add M
inst✝² : Mul M
inst✝¹ : LT M
inst✝ : M ⊧ₘ* 𝐏𝐀⁻
a✝ b✝ c✝ a b c : M
⊢ a ≤ a + b + c
Tactic:
simp [add_assoc]
State after:
no goals