Hudson, Inc. is a calendar-year corporation. Its financial statements for the years 2018 and 2017 contained errors as follows:

2018 Ending inventory $9,000 overstated Depreciation Expense $6,000 understated

2017 Ending inventory $24,000 overstated Depreciation expense Depreciation Expense $18,000 overstated

2. Assume that no correcting entries were made at December 31, 2017. Ignoring income taxes, by how much will retained earnings at December 31, 2018 be overstated or understated?

please explain your answer , no excel sheets, I know the answer.