The numerator of an improper fraction is 4 less than 3 times the denominator, and the difference between the numerator and the denominator is 10. What is this false fraction?
一个假分数的分子比分母的3倍少4，分子与分母的差是10．这个假分数是多少？
<gadget id="calculator">4 + 10</gadget>
<output>14</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<gadget id="calculator">3 * 7</gadget>
<output>21</output>

<gadget id="calculator">21 - 4</gadget>
<output>17</output>

<gadget id="calculator">17 / 7</gadget>
<output>17/7 = around 2.428571</output>

<result>17/7 = around 2.428571</result>