Solve the equation: 4x-x=(24/7).
解方程：4x-x=(24/7)．
<gadget id="calculator">24 / 7</gadget>
<output>24/7 = around 3.428571</output>

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">(24/7) / 3</gadget>
<output>8/7 = around 1.142857</output>

<result>8/7 = around 1.142857</result>