Who is to blame, Macbeth or Lady?

In Shakespeare’s Macbeth, Macbeth is driven to downfall when the witches tell him prophecies that he will be king. He takes fate into his own hands and does some horrible things. Who is to blame for this downfall, Macbeth or Lady Macbeth? Macbeth and Lady Macbeth are both factors to his downfall, but Macbeth is most responsible for his own actions.
Lady Macbeth does have some fault for this downfall. She convinced Macbeth to kill Duncan when he dec...