1) 5 + x = 9 a) x = 4 b) x = 3 c) x = 5 d) x = 6 2) x + 3 = 7 a) x = 5 b) x = 4 c) x = 3 d) x = 2 3) 6 + x = 10 a) x = 3 b) x = 4 c) x = 5 d) x = 6 4) x + 2 = 5 a) x = 2 b) x = 3 c) x = 4 d) x = 5 5) 4 + x = 8 a) x = 3 b) x = 4 c) x = 5 d) x = 6 6) x + 1 = 6 a) x = 4 b) x = 5 c) x = 6 d) x = 7 7) 3 + x = 7 a) x = 3 b) x = 4 c) x = 5 d) x = 6 8) x + 5 = 9 a) x = 3 b) x = 4 c) x = 5 d) x = 6 9) 2 + x = 6 a) x = 3 b) x = 4 c) x = 5 d) x = 6 10) 7 + x = 10 a) x = 2 b) x = 3 c) x = 4 d) x = 5

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