Solve the equation: x-((1/5)+0.5)=1.
解方程：x-((1/5)+0.5)=1．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) + 0.5</gadget>
<output>0.7</output>

<gadget id="calculator">1 + 0.7</gadget>
<output>1.7</output>

<result>1.7</result>