Here are selected 2017 transactions of Indigo Corporation.

Jan. 1 Retired a piece of machinery that was purchased on January 1, 2007. The machine cost $61,800 and had a useful life of 10 years with no salvage value. June 30 Sold a computer that was purchased on January 1, 2015. The computer cost $37,000 and had a useful life of 4 years with no salvage value. The computer was sold for $4,000 cash. Dec. 31 Sold a delivery truck for $9,380 cash. The truck cost $23,600 when it was purchased on January 1, 2014, and was depreciated based on a 5-year useful life with a $3,200 salvage value.

Prepare a tabular summary to record all transactions described on the above dates. Update depreciation on assets disposed of, where applicable. Indigo Corporation uses straight-line depreciation. (If a transaction causes a decrease in Assets, Liabilities or Stockholders' Equity, place a negative sign (or parentheses) in front of the amount entered for the particular Asset, Liability or Equity item that was reduced.)