Explanation:
Adjusting entries of fees collected in advance:
    1.  Dr  unearned fee    6600
               Cr fees earned           6600
Depreciation of Computers:
  Dr Depreciation expense - computer 1650
                  Cr Accumulated depreciation   1650
Depreciation of Furniture:
  Dr Depreciation expense - office furniture 1925
                  Cr Accumulated depreciation            1925
Adjusting entries of salaries:
  Dr  Salary expense    2695
        Cr Salary payable        2695
Adjusting entries of Insurance:
  Dr Insurance expense       1430
          Cr prepaid insurance       1430.
Adjusting entries of office supplies:
 Dr Office supplies expense 528
             Cr Office supplies   528
Adjusting entries of utilities:
  Dr Utilities expense  77
            Cr Utilities payable     77