Solve the equation: x+5=3x+1-3+1.
解方程：x+5=3x+1-3+1．
<gadget id="calculator">3 - 1 - 1</gadget>
<output>1</output>

<gadget id="calculator">5 + 1</gadget>
<output>6</output>

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

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<result>3</result>