Adjusting entries for Dec. 2007

The buildings have a $10,000 residual value and a 40-year useful life. The straigh-line depreciation method is used. The building was purchased on July 6, 2006.


Please, does anyone know how to work this problem?

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S/L depreciation = (cost-residual)/useful life. But that equation should be in your book. I'm also not quite sure what you actual question is. You've titled it accumulated depreciation, but then wrote adjusting entries on the post. What are you actually trying to do?