ACCOUNT TITLE TRIAL BALANCE ADJUSTMENTS
debit credit debit credit
Prepaid Insurance $3,600 (5) 600
Supplies 2,800 (4) 2,100
Equipment 25,000 (1) 1,200
Acc. Dep.-Equipment $8,400 (1) 1,200
Notes Payable 20,000 (3) 500
Unearned Rent 9,900 (2) 3,300
Rent Revenue 60,000 (2) 3,300
Interest Expense 0
Wages Expense 14,000
Depreciation Expense
Insurance Expense (5) 600
Interest Payable (3) 500
Supplies Expense. (4) 2,100
Totals $45,400 98,300 7,700 7,700

An analysis of the accounts shows the following.
1. The equipment depreciates $400 per month.
2. One-third of the unearned rent was earned during the quarter.
3. Interest of $500 is accrued on the notes payable.
4. Supplies on hand total $700.
5. Insurance expires at the rate of $200 per month.

The trial balance is out by excess credit of 52900. I think you forgot to mention some asset as well as capital account as of the beginning of the quarter.

Depreciation entry is wrong:
Debit Depreciation expense 1200
Credit Accumulated depreciation 1200

Interest expense is shown as payable in entry(3)