The sum of the numerator and denominator of a fraction is 29. If the numerator and denominator are reduced by 2 at the same time, it becomes (2/3) after simplification. What is the original fraction?
一个分数的分子与分母的和是29，如果分子、分母同时减少2，化简后变成(2/3)，原来这个分数是多少？
<gadget id="calculator">29 - 12</gadget>
<output>17</output>

<gadget id="calculator">12 / 17</gadget>
<output>12/17 = around 0.705882</output>

<result>12/17 = around 0.705882</result>