Solve the equation: 13*(2+2x)=52.
解方程：13*(2+2x)=52．
<gadget id="calculator">13 * 2</gadget>
<output>26</output>

<gadget id="calculator">52 - 26</gadget>
<output>26</output>

<gadget id="calculator">26 / 26</gadget>
<output>1</output>

<result>1</result>