Solve the equation (4/5)x+(2/15)x=(2/3).
解方程(4/5)x+(2/15)x=(2/3)．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">(4/5) + (2/15)</gadget>
<output>14/15 = around 0.933333</output>

<gadget id="calculator">(2/3) / (14/15)</gadget>
<output>5/7 = around 0.714286</output>

<result>5/7 = around 0.714286</result>