There are 84 people in the dance team of the Children's Palace, and the number of the dance team is 15 people more than three times that of the chorus team, and 8 people less than four times the number of the chorus team. How many people are there in the chorus? (Comprehensive calculation solution using two methods)
少年宫舞蹈队有84人，舞蹈队的人数比合唱队的3倍多15人；比合唱队的4倍少8人．求合唱队有多少人？(用两种方法列综合算式解答)
<result>23</result>