Theorem: LO.FirstOrder.Arith.Model.mul_sub (Arithmetization/Basic/PeanoMinus.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 : M
h : b ≤ a
⊢ c * (a - b) = c * a - c * b
Tactic:
simp [mul_comm c, sub_mul, h]
State after:
no goals