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7 and 8 are the answer. Think “? - ? = 1”. Then thin about your addition table: 0,15 1,14 2,13 3,12… and on until you get to 7,8, because 7+8=15 and 7-8=1.😁
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Earn +20 ptsQ: What is the sum of two numbers is 15 their difference is 1?
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