(6/(x+2))=(2/3).
(6/(x+2))=(2/3)．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 2</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">6 - (4/3)</gadget>
<output>14/3 = around 4.666667</output>

<gadget id="calculator">(14/3) / (2/3)</gadget>
<output>7</output>

<result>7</result>