Solve the equation: 5x-3*11=42.
解方程：5x-3*11=42．
<gadget id="calculator">3 * 11</gadget>
<output>33</output>

<gadget id="calculator">42 + 33</gadget>
<output>75</output>

<gadget id="calculator">75 / 5</gadget>
<output>15</output>

<result>15</result>