Solve the equation: (2/3)x+(1/2)x=42.
解方程：(2/3)x+(1/2)x=42．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

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

<gadget id="calculator">(2/3) + (1/2)</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">42 / (7/6)</gadget>
<output>36</output>

<result>36</result>