please help with retained earnings

Exercise 4-20 (Part Level Submission) Selected year-end account balances from the adjusted trial balance as of December 31, 2017, for Swifty Corporation is provided below DebitCredit Accounts Receivable Dividends Depreciation Expense Equipment Salaries and Wages Expense Accounts Payable Accumulated Depreciation-Equipment Unearned Rent Revenue Service Revenue Rent Revenue Rent Expense Retained Earnings Supplies Expense $53,720 19,460 9,770 157,470 67,410 $39,220 84,950 16,950 136,010 4,590 2,660 45,730 1,040