2 - 1+1 =, 9 - 7+2 =, 7 - 4+3 =, 14 - 10+4 =, 13 - 6+7 =, 5 - 6+ _ = 11, 4 - 3+ _ = 7, 16 - 10+6 =, 6 - 5+1 =, 20 - 10 + 10 =, 18 - 10+ 8 =, 1 - 0+1 =, 8 - 4 + 4 = , 10 - 5+5 =, 0 - 10+ _ = 10,

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