Theorem: IMOSL.Extra.CharTwo.add_add_cancel_left (IMOSLLean4/Extra/CharTwo/Defs.lean)

State before:
M : Type u_1
inst✝¹ : AddMonoid M
inst✝ : CharTwo M
x y : M
⊢ x + (x + y) = y
Tactic:
rw [← add_assoc, add_self_eq_zero, zero_add]
State after:
no goals