At December 31, the unadjusted trial balance of H&R Tacks reports Software of $34,500 and and zero balances in Accumulated Amortization and Amortization Expense. Amortization for the period is estimated to be $6,900. Prepare the adjusting journal entry on December 31. Prepare the T-accounts for each account, enter the unadjusted balances, post the adjusting journal entry, and report the adjusted balance.