Shuishui’s house, school, and Xixi’s house are on the same straight line. Shuishui’s house is 200 meters away from the school, and Xixi’s house is 150 meters away from the school. So how many meters is the distance between Shuishui’s house and Xixi’s house?
水水家、学校、西西家同在一条直线上，水水家离学校200米，西西家离学校150米，那么水水家与西西家的距离可能是多少米
<gadget id="calculator">200 - 150</gadget>
<output>50</output>

<result>50</result>