1) x + 7 = 12 a) x = 7 b) x = 5 c) x = 19 d) x = 12 2) x + 3 = 9 a) x = 3  b) x = 6 c) x = 9 d) x = 12 3) x + 2 = 8 a) x = 2  b) x = 6 c) x = 8 d) x = 10 4) x + 1 = 11 a) x = 12  b) x = 10 c) x = 1 d) x = 11 5) x + 5 = 15 a) x = 15  b) x = 10 c) x = 5 d) x = 20 6) x + 4 = 9 a) x = 4 b) x = 5 c) x = 9 d) x = 13 7) x + 3 = 15 a) x = 3 b) x = 12 c) x = 15 d) x = 18 8) x + 12 = 23 a) x = 12 b) x = 11 c) x = 23 d) x = 35 9) x + 9 = 16 a) x = 9 b) x = 7 c) x = 16 d) x = 25 10) x + 3 = 8 a) x = 3 b) x = 5 c) x = 8 d) x = 11

Sloving for x (Addition)

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