It is known that (1/(A))+(1/(B))=(1/35), A<B, what is the minimum difference between (1/(A)) and (1/(B)).
已知生(1/(A))+(1/(B))=(1/35)，A＜B，(1/(A))与(1/(B))的差最小是多少．
<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">1 / 84</gadget>
<output>1/84 = around 0.011905</output>

<gadget id="calculator">(1/60) - (1/84)</gadget>
<output>1/210 = around 0.004762</output>

<result>1/210 = around 0.004762</result>