A) Three features of the double-entry system of bookkeeping are:

a) Three features of the double-entry system of bookkeeping are:

• Dual Aspect Concept: Every transaction has two effects, a debit and a credit, which are equal in amount.
• Completeness: It provides a complete record of all financial transactions, including assets, liabilities, capital, revenues, and expenses.
• Accuracy Check: The system allows for the preparation of a trial balance, which helps to check the arithmetical accuracy of the ledger accounts.

b) Accounting Equation:

The accounting equation is:

$$\text{Assets} = \text{Liabilities} + \text{Capital}$$

Let's analyze the given transactions:

Step 1: Initial Equation

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