For a minimal fraction, if 1 is added to the numerator, then the numerator is 1 less than the denominator; if 1 is added to the denominator, the value of the fraction is (3/4), what is the original minimal fraction?
一个最简分数，如分子加1，则分子比分母少1；如分母加1，分数值是(3/4)，则原最简分数是多少．
<gadget id="calculator">1 + 1 + 1</gadget>
<output>3</output>

<gadget id="calculator">4 - 3</gadget>
<output>1</output>

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

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">12 - 1</gadget>
<output>11</output>

<gadget id="calculator">3 / 1 / 11</gadget>
<output>3/11 = around 0.272727</output>

<gadget id="calculator">3 * (3/11)</gadget>
<output>9/11 = around 0.818182</output>

<result>9/11 = around 0.818182</result>