Solve the equation: 7(x-2)=2x.
解方程：7(x-2)=2x．
<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<gadget id="calculator">7 - 2</gadget>
<output>5</output>

<gadget id="calculator">14 / 5</gadget>
<output>14/5 = around 2.8</output>

<result>14/5 = around 2.8</result>