Prepare tabular summaries to record these transactions. (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.)

(a) Echo Company retires its delivery equipment, which cost $41,000. Accumulated depreciation is also $41,000 on this delivery equipment. No salvage value is received.
(b) Assume the same information as in part (a), except that accumulated depreciation for the equipment is $37,200 instead of $41,000.