Solve the equation: 4x-(5/6)x=12.
解方程：4x-(5/6)x=12．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">4 - (5/6)</gadget>
<output>19/6 = around 3.166667</output>

<gadget id="calculator">12 / (19/6)</gadget>
<output>72/19 = around 3.789474</output>

<result>72/19 = around 3.789474</result>