Theorem: LO.FirstOrder.Arith.Model.Nuon.four_mul_eq_two_mul_two_mul (Arithmetization/OmegaOne/Nuon.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* 𝐈𝚫₀ + 𝛀₁
a : M
⊢ 4 * a = 2 * (2 * a)
Tactic:
simp [←two_add_two_eq_four, add_mul, two_mul]
State after:
no goals