There is a fraction, if 1 is added to the numerator, it will be (1/3) after the division, and if 4 is added to the denominator, it will be (1/4) after the division, then how much is added to the numerator and denominator, the fraction is equal to (1 /2).
有一个分数，如果分子加上1，约分后为(1/3)，如果分母加上4，约分后为(1/4)，那么分子分母都加上多少，该分数就等于(1/2)．
<result>10</result>