The sum of the numerator and denominator of a fraction is 23. If you subtract 3 from the denominator, the fraction is equal to 1. What is the original fraction? What score?
一个分数的分子与分母的和为23，如果把分母减去3，这个分数就等于1，原来这个分数是多少？是什么分数？
<gadget id="calculator">26 / 2</gadget>
<output>13</output>

<gadget id="calculator">23 - 13</gadget>
<output>10</output>

<gadget id="calculator">10 / 13</gadget>
<output>10/13 = around 0.769231</output>

<result>10/13 = around 0.769231</result>