Answer and Explanation:
According to the given situation, the Journal entry is shown below:-
On September 9
Account receivable Dr $5,800
To Allowance for doubtful debts $5,800
(Being written off amount is recorded)
Here we debited the account receivable as it increased the assets and credited the allowance as it decreased the assets
On September 9
Cash Dr, $5,800
To Accounts receivable $5,800
(Being cash collection is recorded)
Here we debited the cash as it increased the assets and we credited the accounts receivable as it decreased the assets