X=how much is the solution of the equation 2.5X-4=4.75.
X=多少是方程2.5X-4=4.75的解．
<gadget id="calculator">4.75 + 4</gadget>
<output>8.75</output>

<gadget id="calculator">8.75 / 2.5</gadget>
<output>3.5</output>

<result>3.5</result>