There are 25 non-sixth-grade students and 26 non-fifth-grade students in the mathematics interest groups of each grade in a certain school. A total of 35 students in the fifth and sixth grades participated in the mathematics interest group. How many students participated in the school mathematics interest group?
某学校各个年级数学兴趣小组中，有25名不是六年级学生，有26名不是五年级学生，五、六年级参加数学兴趣小组的共有35名，参加学校数学兴趣小组的共有多少学生？
<gadget id="calculator">26 - 25</gadget>
<output>1</output>

<gadget id="calculator">35 - 1</gadget>
<output>34</output>

<gadget id="calculator">34 / 2</gadget>
<output>17</output>

<gadget id="calculator">17 + 26</gadget>
<output>43</output>

<result>43</result>