Correct: 6+1=7, 3+3=6, 2+4=6, 6-4=2, 5+1=6, 6-1=5, 3+4=7, 7-3=4, 7-4=3, 2+3=5, 3+2=5, 5+2=7, 7-5=2, 7-2=5, 6-3=3, 7=0+7, 6=6+0, 5=3+2, Incorrect: 7+1=6, 4+3=6, 2+4=7, 7=5+1, 5+1=5, 6-1=7, 7-4=2, 6+2=7, 5-2=1, 4+2=5, 7-3=2, 6=3+4,

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