The perimeter of an isosceles triangle is 30 centimeters, one side is 7 centimeters long, what is the length of the other side that is not equal to it in centimeters?
一个等腰三角形的周长是30厘米，其中一条边长7厘米，和它不相等的另一条边的长度是多少厘米．
<gadget id="calculator">23 / 2</gadget>
<output>23/2 = around 11.5</output>

<result>23/2 = around 11.5</result>