Hi Mina
These looks to be all reversals, so their sum should be 0 (Zero).
Make a fake Bank Acc. Reconciliation.
Select the bank account and the statement date as 31/12/2017 (To only bring the lines which needs to be cleared on the right side). Hope they are all in 2017 year. if not then put the date accordingly as per the latest entry's to be cleared. Select Suggest lines and click OK. Check the system should only bring the lines on your left side (Bank statement lines) which needs to be cleared.
Balance last statement will be auto populated from last statement. Let it be.
Copy the Balance last statement and put in the Statement ending balance.
Once the total Balance = Statement ending balance, post the Bank recon.
Note :- All the outstanding entries from 2017 should sum to 0 (as it looks in the screenshot)
Hope that helps.
Regards
Kavisha Ahuja