Yes, but we don’t recommend it. Your posts go out to all of your followers and, since most of your followers aren’t interested in buying your business, you run the risk of losing them as followers, i.e. they will unfollow you. You won’t have this problem if you create a listing to advertise a business for sale. Listings are  targeted at people who are interested in buying businesses, so you’ll get more responses and you won’t risk losing your followers.