Julio had $20 in his account. He made two withdrawals of $15 and $25, and then he deposits $28. What

Julio had $20 in his account. He made two withdrawals of $15 and $25, and then he deposits $28. What is his account balance now?

Note: Balances add and Withdrawals subtract. So we have:
20 - 15 - 25 + 28
8