Accrued wages 6100 indicate the effect of each error

Question

The accountant for Mystic Medical Co., a medical services consulting firm, mistakenly omitted adjusting entries for 

(a) Unearned revenue earned during the year ($21,950) and 

(b) Accrued wages ($6,100). Indicate the effect of each error, considered individually, on the income statement for the current year ended July 31. Also indicate the effect of each error on the July 31 balance sheet. Set up a table similar to the following, and record your answers by inserting the dollar amount in the appropriate spaces.
Insert a zero if the error does not affect the item.