What is the solution of the equation 7.8x-2.5x=3.71 x=
方程7.8x-2.5x=3.71的解是x=多少
<gadget id="calculator">7.8 - 2.5</gadget>
<output>5.3</output>

<gadget id="calculator">3.71 / 5.3</gadget>
<output>0.7</output>

<result>0.7</result>