In DnD 5e there is an advantage/disadvantage system. If you have neither advantage or disadvantage use the first number. If you have advantage use the higher of the two. If you have disadvantage use the lower of the two numbers. More details here: <a href="https://wiki.roll20.net/DnD5e_Character_Sheet#FAQ" rel="nofollow">https://wiki.roll20.net/DnD5e_Character_Sheet#FAQ</a>