The school conducted two competitions in oral English and composition. Class 61 took part in the oral English competition (1/2) of the whole class, and the composition competition took up (2/3) of the whole class. Among them, 10 people participated in both the composition competition and the oral English competition. There are also 3 people who neither participate in the composition competition nor the oral competition. How many people are there in the class? ．
学校进行了英语口语和作文两项竞赛．六1班参加口语竞赛的人数占全班人数的(1/2)，参加作文竞赛的人数占全班人数的(2/3)，其中有10人既参加作文竞赛，又参加了口语竞赛，也有3人既不参加作文竞赛，又不参加口语竞赛，全班有多少人？．
<gadget id="calculator">10 - 3</gadget>
<output>7</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) - 1</gadget>
<output>-1/3 = around -0.333333</output>

<gadget id="calculator">(1/2) + (-1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">7 / (1/6)</gadget>
<output>42</output>

<result>42</result>