Calculate the adjusted balance and use a Bal, post reference to show the ending balance of each account. Completed services that were paid for six months earser, $4,080. The Service Revenue unadjusted balance as of December 31 $7,900. The Unearned Revenue balance as of December 31 is $8,100 Adjustment Type: Unearned Revenue Service Revenue Used office supplies of $4.590. The Office Supplies unadjusted balance on December 31 is $10,900 Adjustment Type Supplies Expense Office Supplies