There are 45 people in Class 3 and 2, 38 of whom like learning Chinese, and 35 of them like learning mathematics. Please do the math, how many people love learning both Chinese and mathematics.
三2班有45人，其中有38人喜欢学习语文，有35人喜欢学习数学．请你算一算，既爱学习语文又爱学习数学的有多少人．
<gadget id="calculator">35 - 45</gadget>
<output>-10</output>

<gadget id="calculator">38 + (-10)</gadget>
<output>28</output>

<result>28</result>