Adding 2 to the numerator of a fraction can reduce it to (3/4), and adding 2 to the denominator can reduce it to (1/2). What is the fraction?
一个分数的分子加2可约简为(3/4)，分母加2可约简为(1/2)，这个分数是多少．
<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<result>7/12 = around 0.583333</result>