1.5 times of x is 2 less than 2 times of x, find x.
x的1.5倍比x的2倍少2，求x．
<gadget id="calculator">2 - 1.5</gadget>
<output>0.5</output>

<gadget id="calculator">2 / 0.5</gadget>
<output>4</output>

<result>4</result>