SQL & PL/SQL :: Not Showing Proper Result When Report Taken For All Codes Available In Table

I am trying to build a report.My query is working fine when i take out this report for a single area_code.But it is not showing proper result when report is take for all are_code's available in table.I have used two tables transactions and balance

create table transactions ( glcode varchar2(10), area_code varchar2(10), debit number,credit number );
insert into transactions values(2000,'ap',200,200);
insert into transactions values(3000,'ap',222,222);
insert into transactions values(4000,'ap',123,123);
insert into transactions values(2000,'dp',200,200);
insert into transactions values(3000,'dp',222,222);
insert into transactions values(4000,'dp',123,123);
insert into transactions values(2000,'pp',200,200);
insert into transactions values(3000,'pp',222,222);
insert into transactions values(4000,'pp',123,123);
[code]....