help now please

Question

At the beginning of the month, Evan had $24 in his account at the school bookstore. First he bought some notebooks and pens that cost $16. Then he deposited some more money and his account balance was $28. Then he bought a book for English class that cost $34. Then he deposited exactly enough money so that he paid off his debt to the bookstore. How much money does Evan have in his account at the school bookstore now?

Answer 1

24-16 = 8

8 + 20 = 28

28-34 = -6

-6 + 6 = 0

he has nothing left