how do i calculate stockholders equity and net income

in Ace Auto Parts, Inc.'s December 31, 2016 balance sheet: $ 50,000 100,000 60,000 130,000 40,000 70,000 December 31, 2016: $ 90,000 100,000 150,000 130,000 60,000 50,000 ese balances and determine net income for 2017, assuming that the only 2016