Solve the equation: 8x-4x=14.
解方程：8x-4x=14．
<gadget id="calculator">8 - 4</gadget>
<output>4</output>

<gadget id="calculator">14 / 4</gadget>
<output>7/2 = around 3.5</output>

<result>7/2 = around 3.5</result>