i need part A & part B please!

10)On March 1, 2017, Crux Industries sells machinery for $55,000. The machinery originally cost $123,000 and had an estimated 8-year life with an expected salvage value of $21,000. The Accumulated Depreciation account had a balance of $85,876 on December 31, 2016. a. What is the gain or loss on the date of the sale? (Hint: Don't forget to update depreciation through the date of sale first!) b. What is the journal entry to record this sale? 3/1