1. **State the problem:** Blaine withdraws 78 from his bank account, but he only had 60 in the account. We want to find the new account balance using an integer. 2. **Understand the situation:** Withdrawing money means subtracting from the current balance. Since Blaine had 60 and withdrew 78, the new balance is calculated by subtracting 78 from 60. 3. **Write the expression:** $$\text{New balance} = 60 - 78$$ 4. **Calculate the new balance:** $$60 - 78 = \cancel{60} - \cancel{78} = -18$$ 5. **Interpret the result:** The new balance is -18, which means Blaine's account is overdrawn by 18. **Final answer:** The integer representing the new account balance is **-18**.