Li Hui's average score in the mid-term examination of Chinese, mathematics and English is 93 points, and the average score of Chinese and English is 91 points. What is his math score?
李辉语文、数学、英语三门功课期中考试平均成绩是93分，语文和英语的平均成绩是91分，他的数学成绩是多少分．
<gadget id="calculator">93 * 3</gadget>
<output>279</output>

<gadget id="calculator">91 * 2</gadget>
<output>182</output>

<gadget id="calculator">279 - 182</gadget>
<output>97</output>

<result>97</result>