what is principal of accountancy?

Answer 1

Debit this, Credit that

Answer 2

Here is a brief and complete summary of debit credit rules:

(1) Debit: which comes in
credit: which goes out

(2) Debit: The receiver
credit: The giver

(3)Debit: expenses/assests
credit: income/liabilities

Answer 3

Debit and credit both side are equal in respect of double entry system.