Description: Your checking account is overdrawn. Not good. Use your knowledge of decimals and adding negative and positive numbers to bring your account back into the black. Created by Sal Khan and Monterey Institute for Technology and Education. At the beginning of the week, Stewart's checking account had a balance of negative $15.08. How much was in Stewart's checking account after the second deposit, so after both of these deposits right over here. So he starts off with a negative balance.*Teacher Advisor is 100% free.