∀ {mvarId : Lean.MVarId} {subst : Lean.Meta.FVarSubst} {numNewEqs : ℕ} {mvarId_1 : Lean.MVarId}
  {subst_1 : Lean.Meta.FVarSubst} {numNewEqs_1 : ℕ},
  { mvarId := mvarId, subst := subst, numNewEqs := numNewEqs } =
      { mvarId := mvarId_1, subst := subst_1, numNewEqs := numNewEqs_1 } →
    mvarId = mvarId_1 ∧ subst = subst_1 ∧ numNewEqs = numNewEqs_1