debit must have credit and credit is equal to debit
First,when you use the debit and credit accounting, for each economic business,not only to record an (or several) account debit,bu also record another lender (or several) account that is debit must have credit .and debit must be equal to credit.second the accounts can be recorded the same account and can also not the same account, but it must be two direction of charge to an account, neither debite,nor credite.
This equation, called financial condition equation, it reflects the assets, liabilities and owners' equity, the relationship between the three accounting elements reveals the enterprise at a specific point of the financial situation. To be specific, it shows that the enterprise at a specific point of various assets and creditors and investors on the basic situation of enterprise assets claims, shows that the enterprise assets, all are provided by the investors and creditors.