conversations.from: human
conversations.value: Can you give me some step-by-step instructions for this math problem: Tony read 23 books, Dean read 12 books and Breanna read 17 books. Tony and Dean read 3 of the same books and all three had read the same book as well. In total how many different books have Tony, Dean, and Breanna read?
conversations.from: assistant
conversations.value: Tony and Dean together read 23 + 12 = 35 books
  3 of these books were duplicates so Tony and Dean together read 35 - 3 = 32 unique books
  All three read 32 + 17 = 49 books
  Because the books are being counted three times, the book is counted 3 - 1 = 2 extra times.
  All together they have read 49 - 2 = 47 different books