Contact us
Choose a category below so we can get back to you as quickly as possible.
首先找到零點:收人記為負,用去記為正 收入300應該記為—300而題目記為—240所以零點為收入60元 下麵就好理解了,用去300記為+300再加60為+360 用去100記為+100再加60為+160
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.