The No. 5 bus originally had x passengers, but 11 people came up at the east gate of the Old Summer Palace, and 5 people went down again. How many passengers are there on the bus?
5路公共汽车原来有乘客x人，在圆明园东门上来11人，又下去5人，车上现有乘客多少人．
<gadget id="calculator">11 - 5</gadget>
<output>6</output>

<result>6</result>