Answer:
$1,037
Step-by-step explanation:
Allowance for doubtful accounts is a contra asset account that must have a credit balance since it reduces the value of accounts receivable. In this case, since the account had a debit balance of $198, and the ending balance of the account should be $839, then we must credit = $839 + $198 = $1,037
The adjusting entry should be:
December 31, adjusting entry allowance for doubtful accounts
Dr Bad debt expense 1,037
Cr Allowance for doubtful accounts 1,037