Advance Accounting: I need brief answer for this 6 straight forward Question

Please answer the following questions briefly and adequately

1- When preparing the consolidated balance sheet, both the investment account in the subsidiary company and the equity in the subsidiary company are canceled, explain the reason for this

2- Explain the reason for reducing the ending inventory by the amount of the unrealized profit balance from the previous year

3- What is meant by unrealized profits or losses resulting from exchange operations between the holding companies and the subsidiary company?

4- What is meant by consolidated financial statements, and what is the purpose of preparing them?

5- Explain the difference between the acquisition method and the common interests method for handling merger expenses

6- What is the accounting treatment that the holding company records in its books when it acquires the shares of the subsidiary company?

Ineed this answers in PDF file

Thanks