There are 8 people in the first group of class 3 and 2. In a language and mathematics test, they all scored 95 points or more in at least one subject. Among them, 5 people scored 95 points or more in Chinese, and 7 people scored 95 points in mathematics. How many people have scores above 95 in mathematics and mathematics?
三2班第一小组共有8人，在一次语文和数学测验中，他们均至少有一门得了95分以上，其中语文得95分以上的有5人，数学得95分以上的有7人，语文和数学均得95分以上的有多少人．
<gadget id="calculator">5 - 8</gadget>
<output>-3</output>

<gadget id="calculator">7 + (-3)</gadget>
<output>4</output>

<result>4</result>