In class 31, 32 people like music, 27 people like art, and 11 people like both music and art. How many people in the class like music and art?
三1班同学中有32人喜欢音乐，有27人喜欢美术，音乐和美术都喜欢的有11人，全班喜欢音乐、美术的共有多少人？
<gadget id="calculator">27 - 11</gadget>
<output>16</output>

<gadget id="calculator">32 + 16</gadget>
<output>48</output>

<result>48</result>