True: 5 + ? = 12, False: 5 + 12 = ?, 7 - 5 = ?, 7 + 12 = ?, 12 + ? = 17, 5 + 7 = ?, 7 + ? = 12,

On NYE, 5 people were at my house. Some more came over. Then, 12 people were at my house. How many people came over?

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