If 2x+4=15, what is the result of calculating 18-0.6x
如果2x+4=15，那么计算18-0.6x的结果是多少
<gadget id="calculator">15 - 4</gadget>
<output>11</output>

<gadget id="calculator">11 / 2</gadget>
<output>11/2 = around 5.5</output>

<gadget id="calculator">0.6 * (11/2)</gadget>
<output>3.3</output>

<gadget id="calculator">18 - 3.3</gadget>
<output>14.7</output>

<result>14.7</result>