Solve the equation: (6/5)=((1-x)/(1-2x)).
解方程：(6/5)=((1-x)/(1-2x))．
<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/5) - 1</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(6/5) * 2</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">(12/5) - 1</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">(1/5) / (7/5)</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>