Please help me solve what I got wrong ?

(To record depreciation expense on forklift) June 30 Cash 11700 Accumulated Depreciation-Equipment 18900 Gain on Disposal of Plant Assets 3600 Equipment 27000 (To record sale of forklift) Dec. 31 Depreciation Expense 3800 Accumulated Depreciation-Equipment 3800 (To record depreciation expense on truck) Dec. 31 Loss on Disposal of Plant Assets 22800 Accumulated Depreciation-Equipment 10600 Equipment 33400 (To record sale of truck)