The new fraction obtained by adding the same natural number to the numerator and denominator of the fraction (4/9) is (9/10).
分数(4/9)分子分母同时加上同一个自然数多少所得的新分数是(9/10)．
<gadget id="calculator">45 - 4</gadget>
<output>41</output>

<result>41</result>