journal entry for exchange with commercial substance- gain

Example 9: South Texas Drilling trades drill press A for drill press B from another company. has a book value of $11,000 (cost $32,000 less $21,000 accumulated depreciation) and a fair $8,000. Drill press B has a list price of $38.000, and the seller has allowed a trade-in allowance of $15,000 on the press