After the numerator of a fraction is increased by 3, the value of the fraction is (5/6). If the numerator of this number is decreased by 3, the value of the fraction is (1/3). What is the original fraction?
一个分数的分子增加3后，分数的值是(5/6)，如果这个数的分子减少3，其分数值是(1/3)，原来这个分数是多少．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(5/6) + (1/3)</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">(7/6) / 2</gadget>
<output>7/12 = around 0.583333</output>

<result>7/12 = around 0.583333</result>