Solve the equation: (3/10)-(x+(1/25))=(1/4).
解方程：(3/10)-(x+(1/25))=(1/4)．
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 / 25</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(3/10) - (1/25) - (1/4)</gadget>
<output>1/100 = around 0.01</output>

<result>1/100 = around 0.01</result>