Solve the equation: 2(x+1)=1-(x-4)
解方程：2(x+1)=1-(x-4)
<gadget id="calculator">4 - 2</gadget>
<output>2</output>

<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">2 + 1</gadget>
<output>3</output>

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

<result>1</result>