Just need help finding depreciation expense please.

The comparative balance sheets for Ayayai Corporation show the following information December 31 2017 2016 Cash Accounts receivable Inventory Available-for-sale debt investments Buildings Equipment Patents $33,400 $12,900 9,900 8,900 3,000 30,100 19,900 6,100 $107,500 $90,800 12,200 11,900 0 0 45,000 5,000 Allowance for doubtful accounts Accumulated depreciation-equipment Accumulated depreciation-building Accounts payable Dividends payable Notes payable, short-term (nontrade) Long-term notes payable Common stock Retained earnings $3,000 $4,500 4,500 5,900 3,000 5,000 4,000 25,000 33,000 5,900 $107,500 $90,800 2,000 5,000 0 3,000 31,000 43,000 20,500