A number minus (3/4), plus (2/3) equals (1/12), find this number.
一个数减去(3/4)，再加上(2/3)等于(1/12)，求这个数．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(1/12) - (2/3)</gadget>
<output>-7/12 = around -0.583333</output>

<gadget id="calculator">(3/4) + (-7/12)</gadget>
<output>1/6 = around 0.166667</output>

<result>1/6 = around 0.166667</result>