A rectangle and a square have the same perimeter. The length of the rectangle is 16 cm and the width is 12 cm. What is the side length of the square in cm? (solution by equation)
一个长方形和一个正方形周长相等，长方形长16厘米，宽12厘米，正方形的边长是多少厘米？(用方程解)
<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">32 + 24</gadget>
<output>56</output>

<gadget id="calculator">56 / 4</gadget>
<output>14</output>

<result>14</result>