There are 45 students in Class 5, 26 of them participated in the mathematics competition, 22 participated in the composition competition, and 12 participated in both competitions. How many people in class 5 did not participate in the two competitions?
五①班有45人，其中26人参加了数学竞赛，22人参加了作文比赛，12人两项比赛都参加了．五①班有多少人两项比赛都没有参加．
<gadget id="calculator">22 - 12</gadget>
<output>10</output>

<gadget id="calculator">26 + 10</gadget>
<output>36</output>

<gadget id="calculator">45 - 36</gadget>
<output>9</output>

<result>9</result>