The school art troupe has a total of 45 members, of which 22 students can play the piano and 27 students can play the violin, and the number of students who can do both is exactly three times the number of students who can’t do both, and at least one of them can do the same How many names are there?
学校艺术团共有团员45人，其中有22名同学会弹钢琴，27名同学会拉小提琴，而两样都会的同学人数恰好是两样都不会的同学人数的3倍，则至少会其中一样的同学有多少名．
<gadget id="calculator">27 - 45</gadget>
<output>-18</output>

<gadget id="calculator">22 + (-18)</gadget>
<output>4</output>

<gadget id="calculator">3 - 3 - 1</gadget>
<output>-1</output>

<gadget id="calculator">3 + (-1)</gadget>
<output>2</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">45 - 2</gadget>
<output>43</output>

<result>43</result>