Celik. D.D.S., opened a dental practice on January 1. 2011. During the first month of operations, the following transactions occurred.
1. Performed services for patients who had dental plan insurance. At January 31.TL875 of such services was earned but not yet recorded.
2. Utility expenses incurred but not paid prior to January 31 totaled TL520.
3. Purchased dental equipment on .January 1 for TL80,000, paying TL20,000 in cash and signing a TL60,000, 3-year note payable. The equipment depreciates TL400 per month. Interest is TL500 per month.
4. Purchased a one-year malpractice insurance policy on January 1 for TL12,000.
5. Purchased TL1,600 of dental supplies. On January 31, determined that TL400 of supplies were on hand.

Instructions
Prepare the adjusting entries on .January 31. Account titles are: Accumulated Depreciation—Denial Equipment. Depreciation Expense, Service Revenue, Accounts Receivable, Insurance Expense, Interest Expense, Interest Payable, Prepaid Insurance, Supplies, Supplies Expense, Utilities Expense and Utilities Payable.