A job alone takes 6 hours, and B alone takes 8 hours. How many hours can A and B work together to complete the job? what is the correct formula
一份工作甲独做要6小时，乙独做要8小时，甲乙两人合做多少小时可以完成这份工作？正确的算式是多少
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/6) + (1/8)</gadget>
<output>7/24 = around 0.291667</output>

<gadget id="calculator">1 / (7/24)</gadget>
<output>24/7 = around 3.428571</output>

<result>24/7 = around 3.428571</result>