Solve the equation: x+(3/26)=(7/13)+(1/2).
解方程：x+(3/26)=(7/13)+(1/2)．
<gadget id="calculator">7 / 13</gadget>
<output>7/13 = around 0.538462</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 / 26</gadget>
<output>3/26 = around 0.115385</output>

<gadget id="calculator">(1/2) - (3/26)</gadget>
<output>5/13 = around 0.384615</output>

<gadget id="calculator">(7/13) + (5/13)</gadget>
<output>12/13 = around 0.923077</output>

<result>12/13 = around 0.923077</result>