Solve the equation: x-(1/4)=(7/12).
解方程：x-(1/4)=(7/12)．
<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(7/12) + (1/4)</gadget>
<output>5/6 = around 0.833333</output>

<result>5/6 = around 0.833333</result>