what is accounting

Sheet1
                                                        Reconciliation
                Accounts receivable                                        Net income    168000
        Opening balance    195000    Cash collection    1387500                    Cash receipt from customers    1387500            Add: loss on sale of equipment    4500
        Sales revenue    1425000                            Payment to supplier    -912000            Less: gain on sale of debt investment    -22500
                                        Payment for operating expense    -339000            Add: Depreciation    33000
                Closing balance    232500                    Income tax paid    -64500            Add: Bad debt expense    3000
                                        Cash from operating activities    72000            Change in a/c payables    9000
                                                        Change in inventory    -21000
                                                        Change in a/c receivbales    -37500
                Alowance for doubtful debts                        Purchase of debt investment    -7500            Less: Income tax paid    -64500
                Opening balance    12000                    Sale of debt investment    75000            Cash from operating activities    72000
                Bad debt...