The sum of two simplest fractions with the same numerator is 1 (5/28), and the ratio of the denominators of these two fractions is 4:7. What is the larger fraction?
两个分子相同的最简分数的和是1(5/28)，这两个分数分母的比是4：7，其中较大的分数是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 4</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">1 / (4/3)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>