What is three and three tenths subtract one and eleven fifteenths?

Well, let's think of this like painting a happy little picture. If we have three and three tenths, and we take away one and eleven fifteenths, we simply need to borrow a bit from the whole numbers and regroup the fractions. So, when we subtract, we get one and four hundred and thirty-nine fiftieths. Just like that, we've created a beautiful new number!