Add 9 to 2.6 times a number, and the sum is 35. Find this number. (solution by equation)
一个数的2.6倍加上9，和是35，求这个数．(用方程解)
<gadget id="calculator">35 - 9</gadget>
<output>26</output>

<gadget id="calculator">26 / 2.6</gadget>
<output>10</output>

<result>10</result>