It is known that 3x+2y+6=24, so how much is 9x+6y-6=.
已知3x+2y+6=24，那么9x+6y-6=多少．
<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<gadget id="calculator">54 - 6</gadget>
<output>48</output>

<result>48</result>