Subtracting 7

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• 7 - 7 = 0
• 8 - 7 = 1
• 9 - 7 = 2
• 10 - 7 = 3
• 11 - 7 = 4
• 12 - 7 = 5
• 13 - 7 = 6
• 14 - 7 = 7
• 15 - 7 = 8
• 16 - 7 = 9
• 17 - 7 = 10