Solve the equation: 1/(x+(2/3))=(4/5).
解方程：1/(x+(2/3))=(4/5)．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(4/5) * (2/3)</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">1 - (8/15)</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">(7/15) / (4/5)</gadget>
<output>7/12 = around 0.583333</output>

<result>7/12 = around 0.583333</result>