Explanation:
The adjusting entry is shown below:
On December 31
Supplies expense A/c Dr $3,100
To supplies A/c $3,100
(Being supplies account is adjusted)
The supplies expense is computed by
= Supplies balance - supplies on hand
= $5,700 - $2,600
= $3,100
Now the T- accounts are as follows
Supplies
Beginning balance $5,700 Supplies Expense $3,100
Ending balance $2,600
Supplies expense
Supplies $3,100
Ending balance $3,100