The basketball court used in the Olympic Games is a rectangle with a length of 28 meters and a circumference of 86 meters. What is the width of the basketball court in meters? (solution with equation)
奥运会使用的篮球场是一个长28米的长方形，它的周长是86米，这个篮球场的宽是多少米？(用方程解答)
<gadget id="calculator">28 * 2</gadget>
<output>56</output>

<gadget id="calculator">86 - 56</gadget>
<output>30</output>

<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<result>15</result>