What is the solution of the equation 4x+3=12 x=
方程4x+3=12的解是x=多少
<gadget id="calculator">12 - 3</gadget>
<output>9</output>

<gadget id="calculator">9 / 4</gadget>
<output>9/4 = around 2.25</output>

<result>9/4 = around 2.25</result>