Everyone in the art group of the school can play at least one musical instrument. It is known that there are 24 people who can play the violin, 17 people who can play the electronic organ, and 8 people who can play both. How many people are there in this art group?
学校文艺组每人至少会演奏一种乐器，已知会拉手提琴的有24人，会弹电子琴的有17人，其中两样都会的有8人．这个文艺组一共有多少人？
<gadget id="calculator">24 - 8</gadget>
<output>16</output>

<gadget id="calculator">17 - 8</gadget>
<output>9</output>

<gadget id="calculator">16 + 9 + 8</gadget>
<output>33</output>

<result>33</result>