The numerators of the four different true fractions are all 1, two of their denominators are odd and two are even, and the sum of the two fractions with odd denominators is equal to the sum of the two fractions with even denominators. What is the minimum sum of such two even numbers?
四个不同的真分数的分子都是1，它们的分母有两个是奇数，两个是偶数，而且两个分母是奇数的分数之和等于两个分母是偶数的分数之和．这样的两个偶数之和至少为多少．
<gadget id="calculator">6 / 1</gadget>
<output>6</output>

<gadget id="calculator">10 / 1</gadget>
<output>10</output>

<gadget id="calculator">6 + 10</gadget>
<output>16</output>

<result>16</result>