The black and white teams each write down a number. The sum of the average number written by every three people plus the number written by the remaining person is 55, 37, 33, and 49 respectively. What is the largest number among the numbers written by the black and white teams? ．
黑白团队各写下一个数，每三人所写的数的平均数加上余下一人所写的数之和分别是55、37、33、49，黑白团队所写的数字中最大的数是多少．
<result>39</result>