What is the number less (5/6) than the sum of (3/4) and (1/2).
比(3/4)和(1/2)的和少(5/6)的数是多少．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(1/2) - (5/6)</gadget>
<output>-1/3 = around -0.333333</output>

<gadget id="calculator">(3/4) + (-1/3)</gadget>
<output>5/12 = around 0.416667</output>

<result>5/12 = around 0.416667</result>