Write a system of equations to describe the situation below, solve using any method, and fill in the blanks. Eric and Jacob just had business cards made. Eric's printing company charged a one-time setup fee of $12 and then $16 per box of cards. Jacob, meanwhile, ordered his online. They cost $15 per box. There was no setup fee, but he had to pay $13 to have his order shipped to his house. By coincidence, Eric and Jacob ended up spending the same amount on their business cards. How much did each spend? How many boxes did each buy?​