Xiao Ming was born in February 1996, his age is doubled plus 7, which happens to be the total number of days in the month he was born, please find out Xiao Ming's age? (solution by equation)
小明是1996年2月出生的，他的年龄的2倍加上7，正好是他出生那一个月的总天数，请你求出小明的年龄？(用方程解)
<gadget id="calculator">29 - 7</gadget>
<output>22</output>

<gadget id="calculator">22 / 2</gadget>
<output>11</output>

<result>11</result>