5 + 5 - 10 + 7 + 8 = 17, 15, 16 16 - 7 + 3 + 8 - 6 = 15, 14, 12 9 + 9 - 15 + 9 + 8 = 17, 19, 20 16 - 12 +13 + 3 - 11 = 5, 9, 8 15 + 4 - 14 +12 -17 = 1, 0, 3 6 + 6 + 8 - 19 + 0 = 1, 3, 4