Solve the equation: 180*(2/3)-12x=100.
解方程：180*(2/3)-12x=100．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">180 * (2/3)</gadget>
<output>120</output>

<gadget id="calculator">120 - 100</gadget>
<output>20</output>

<gadget id="calculator">20 / 12</gadget>
<output>5/3 = around 1.666667</output>

<result>5/3 = around 1.666667</result>