Given the following reasoning and answer, what was the question? There’s a total of 4 x 12 = 48 slices. After the guests eat, there are 48 - 39 = 9 pieces.
 The answer: 9
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The question At a pool party, there are 4 pizzas cut into 12 slices each. If the guests eat 39 slices, how many slices are left?
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