200
Lucy had 5,689 envelopes to sort. She places 43 of the envelopes in a basket. She dumped the remaining envelopes into a mail sorting machine. The machine fills 13 trays with the envelopes, putting the same number in each. What is the equation used to find n, the number of envelopes in each tray?
What is (5,689 - 43) ÷ 13=n