What is the solution of the equation 2x-5*1.9=8.5 x=
方程2x-5*1.9=8.5的解是x=多少
<gadget id="calculator">5 * 1.9</gadget>
<output>9.5</output>

<gadget id="calculator">8.5 + 9.5</gadget>
<output>18</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<result>9</result>