There are a total of 56 students participating in the art group and computer group of the school. There are 39 students in the art group (5/8) and computer group (3/4). How many students are there in the art group? (cannot be solved by equation)
参加学校美术组和电脑组的学生共56人，美术组的人数(5/8)与电脑组人数的(3/4)共39人，美术组有学生多少人？(不能用方程解)
<result>24</result>