Bob owned equipment (FMV $50,000) that he used in his business. The equipment was subject to a $20,000 loan. Bob purchased the equipment in 2015 for $100,000. While he owned the equipment, Bob took depreciation deductions of $52,000. Bob sold the equipment in 2017 for $30,000, and the buyer assumed Bobs loan of $20,000 on the equipment. Bobs selling expenses were $500.

What is the amount of Bobs recognized gain or loss?