Answer and Explanation:
The journal entries are shown below;
(a)
Cash $39,000 Â
Accumulated Depreciation $36,000  [($73,000 - $13,000) × 3 ÷ 5]
    To Equipment  $73,000 Â
   To Gain on Sale of Equipment  $2,000 Â
(being the sale of equipment is recorded) Â Â
(b)
Depreciation $4,000  [($73,000 - $13,000) ÷ 5 × 4 ÷12]
    To Accumulated Depreciation  $4,000 Â
(being depreciation expense is recorded) Â Â
Cash $39,000 Â
Accumulated Depreciation $40,000 Â ($36,000 + $4,000)
     To Equipment  $73,000 Â
     To Gain on Sale of Equipment  $6,000 Â
(being the sale of equipment is recorded) Â Â Â
(c)
Cash $22,000 Â
Accumulated Depreciation $36,000 Â
Loss on Sale of Equipment $15,000 Â
     To Equipment  $73,000 Â
(being the sale of equipment is recorded) Â Â
(d)
Depreciation $9,000  [($73,000 - $13,000) ÷ 5 × 9 ÷ 12]
    To Accumulated Depreciation  $9,000 Â
(Being depreciation expense is recorded) Â Â
Cash $22,000 Â
Accumulated Depreciation $45,000 Â ($36,000 + $9,000)
Loss on Sale of Equipment $6,000 Â
       To Equipment  $73,000 Â
(being sale of equipment is recorded) Â