There were x people in class May 1 last semester, 3 people transferred in this semester, and 2 people transferred away, how many people are there in class May 1 this semester.
五一班上学期有x人，本学期转来3人，转走2人，五一班本学期有多少人．
<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<result>1</result>