The browser you are currently connected to is out of date and some features are unavailable.
Use the latest, fast and secure version of the browser!
하...실수했는데 어떻게하죠...심각합니다

오늘 학원에서 수학문제푸는데 덧셈실수해서 선생님이 나가뒤지래요... 사는의미가없네요... 심각합니다..어떻게해야할까요