A rectangle and a square have the same perimeter. If the side length of the square is 6 cm and the length of the rectangle is 7 cm, what is the width of the rectangle in cm?
一个长方形和一个正方形的周长相等．如果正方形的边长是6厘米，长方形的长是7厘米，那么长方形的宽是多少厘米．
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

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

<gadget id="calculator">12 - 7</gadget>
<output>5</output>

<result>5</result>