Correct: 3+9=12, 8+4=12, 6+7=13, 5+7=12, 4+6=10, 2+8=10, 7+7=14, 7+8=15, 4+7=11, 5+9=14, Incorrect: 5+9=16, 6+7=12, 9+3=11, 4+7=12, 8+7=16, 8+8=15, 3+5=9, 12+3=14,

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