4 + 2 = x 6 2 + 4 = x 6 4 + x = 6 2 2 + x = 6 4 6 - 4 = x 2 6 - 2 = x 4 6 - x = 4 2 6 - x = 2 4 x - 4 = 2 6 x - 2 = 4 6 3 + 3 = x 6 3 + 3 = x 6 3 + x = 6 3 3 + x = 6 3 6 - 3 = x 3 6 - 3 = x 3 6 - x = 3 3 6 - x = 3 3 x - 3 = 3 6 x - 3 = 3 6 5 + 2 = x 7 2 + 5 = x 7 5 + x = 7 2 2 + x = 7 5 7 - 5 = x 2 7 - 2 = x 5 7 - x = 5 2 7 - x = 2 5 x - 5 = 2 7 x - 2 = 5 7 4 + 3 = x 7 3 + 4 = x 7 4 + x = 7 3 3 + x = 7 4 7 - 4 = x 3 7 - 3 = x 4 7 - x = 4 3 7 - x = 3 4 x - 4 = 3 7 x - 3 = 4 7 6 + 2 = x 8 2 + 6 = x 8 6 + x = 8 2 2 + x = 8 6 8 - 6 = x 2 8 - 2 = x 6 8 - x = 6 2 8 - x = 2 6 x - 6 = 2 8 x - 2 = 6 8 5 + 3 = x 8 3 + 5 = x 8 5 + x = 8 3 3 + x = 8 5 8 - 5 = x 3 8 - 3 = x 5 8 - x = 5 3 8 - x = 3 5 x - 5 = 3 8 x - 3 = 5 8 4 + 4 = x 8 4 + 4 = x 8 4 + x = 8 4 4 + x = 8 4 8 - 4 = x 4 8 - 4 = x 4 8 - x = 4 4 8 - x = 4 4 x - 4 = 4 8 x - 4 = 4 8 7 + 2 = x 9 2 + 7 = x 9 7 + x = 9 2 2 + x = 9 7 9 - 7 = x 2 9 - 2 = x 7 9 - x = 7 2 9 - x = 2 7 x - 7 = 2 9 x - 2 = 7 9 6 + 3 = x 9 3 + 6 = x 9 6 + x = 9 3 3 + x = 9 6 9 - 6 = x 3 9 - 3 = x 6 9 - x = 6 3 9 - x = 3 6 x - 6 = 3 9 x - 3 = 6 9 5 + 4 = x 9 4 + 5 = x 9 5 + x = 9 4 4 + x = 9 5 9 - 5 = x 4 9 - 4 = x 5 9 - x = 5 4 9 - x = 4 5 x - 5 = 4 9 x - 4 = 5 9 8 + 2 = x 10 2 + 8 = x 10 8 + x = 10 2 2 + x = 10 8 10 - 8 = x 2 10 - 2 = x 8 10 - x = 8 2 10 - x = 2 8 x - 8 = 2 10 x - 2 = 8 10 7 + 3 = x 10 3 + 7 = x 10 7 + x = 10 3 3 + x = 10 7 10 - 7 = x 3 10 - 3 = x 7 10 - x = 7 3 10 - x = 3 7 x - 7 = 3 10 x - 3 = 7 10 6 + 4 = x 10 4 + 6 = x 10 6 + x = 10 4 4 + x = 10 6 10 - 6 = x 4 10 - 4 = x 6 10 - x = 6 4 10 - x = 4 6 x - 6 = 4 10 x - 4 = 6 10 5 + 5 = x 10 5 + 5 = x 10 5 + x = 10 5 5 + x = 10 5 10 - 5 = x 5 10 - 5 = x 5 10 - x = 5 5 10 - x = 5 5 x - 5 = 5 10 x - 5 = 5 10 9 + 2 = x 11 2 + 9 = x 11 9 + x = 11 2 2 + x = 11 9 11 - 9 = x 2 11 - 2 = x 9 11 - x = 9 2 11 - x = 2 9 x - 9 = 2 11 x - 2 = 9 11 8 + 3 = x 11 3 + 8 = x 11 8 + x = 11 3 3 + x = 11 8 11 - 8 = x 3 11 - 3 = x 8 11 - x = 8 3 11 - x = 3 8 x - 8 = 3 11 x - 3 = 8 11 7 + 4 = x 11 4 + 7 = x 11 7 + x = 11 4 4 + x = 11 7 11 - 7 = x 4 11 - 4 = x 7 11 - x = 7 4 11 - x = 4 7 x - 7 = 4 11 x - 4 = 7 11 6 + 5 = x 11 5 + 6 = x 11 6 + x = 11 5 5 + x = 11 6 11 - 6 = x 5 11 - 5 = x 6 11 - x = 6 5 11 - x = 5 6 x - 6 = 5 11 x - 5 = 6 11 10 + 2 = x 12 2 + 10 = x 12 10 + x = 12 2 2 + x = 12 10 12 - 10 = x 2 12 - 2 = x 10 12 - x = 10 2 12 - x = 2 10 x - 10 = 2 12 x - 2 = 10 12 9 + 3 = x 12 3 + 9 = x 12 9 + x = 12 3 3 + x = 12 9 12 - 9 = x 3 12 - 3 = x 9 12 - x = 9 3 12 - x = 3 9 x - 9 = 3 12 x - 3 = 9 12 8 + 4 = x 12 4 + 8 = x 12 8 + x = 12 4 4 + x = 12 8 12 - 8 = x 4 12 - 4 = x 8 12 - x = 8 4 12 - x = 4 8 x - 8 = 4 12 x - 4 = 8 12 7 + 5 = x 12 5 + 7 = x 12 7 + x = 12 5 5 + x = 12 7 12 - 7 = x 5 12 - 5 = x 7 12 - x = 7 5 12 - x = 5 7 x - 7 = 5 12 x - 5 = 7 12 6 + 6 = x 12 6 + 6 = x 12 6 + x = 12 6 6 + x = 12 6 12 - 6 = x 6 12 - 6 = x 6 12 - x = 6 6 12 - x = 6 6 x - 6 = 6 12 x - 6 = 6 12 11 + 2 = x 13 2 + 11 = x 13 11 + x = 13 2 2 + x = 13 11 13 - 11 = x 2 13 - 2 = x 11 13 - x = 11 2 13 - x = 2 11 x - 11 = 2 13 x - 2 = 11 13 10 + 3 = x 13 3 + 10 = x 13 10 + x = 13 3 3 + x = 13 10 13 - 10 = x 3 13 - 3 = x 10 13 - x = 10 3 13 - x = 3 10 x - 10 = 3 13 x - 3 = 10 13 9 + 4 = x 13 4 + 9 = x 13 9 + x = 13 4 4 + x = 13 9 13 - 9 = x 4 13 - 4 = x 9 13 - x = 9 4 13 - x = 4 9 x - 9 = 4 13 x - 4 = 9 13 8 + 5 = x 13 5 + 8 = x 13 8 + x = 13 5 5 + x = 13 8 13 - 8 = x 5 13 - 5 = x 8 13 - x = 8 5 13 - x = 5 8 x - 8 = 5 13 x - 5 = 8 13 7 + 6 = x 13 6 + 7 = x 13 7 + x = 13 6 6 + x = 13 7 13 - 7 = x 6 13 - 6 = x 7 13 - x = 7 6 13 - x = 6 7 x - 7 = 6 13 x - 6 = 7 13 12 + 2 = x 14 2 + 12 = x 14 12 + x = 14 2 2 + x = 14 12 14 - 12 = x 2 14 - 2 = x 12 14 - x = 12 2 14 - x = 2 12 x - 12 = 2 14 x - 2 = 12 14 11 + 3 = x 14 3 + 11 = x 14 11 + x = 14 3 3 + x = 14 11 14 - 11 = x 3 14 - 3 = x 11 14 - x = 11 3 14 - x = 3 11 x - 11 = 3 14 x - 3 = 11 14 10 + 4 = x 14 4 + 10 = x 14 10 + x = 14 4 4 + x = 14 10 14 - 10 = x 4 14 - 4 = x 10 14 - x = 10 4 14 - x = 4 10 x - 10 = 4 14 x - 4 = 10 14 9 + 5 = x 14 5 + 9 = x 14 9 + x = 14 5 5 + x = 14 9 14 - 9 = x 5 14 - 5 = x 9 14 - x = 9 5 14 - x = 5 9 x - 9 = 5 14 x - 5 = 9 14 8 + 6 = x 14 6 + 8 = x 14 8 + x = 14 6 6 + x = 14 8 14 - 8 = x 6 14 - 6 = x 8 14 - x = 8 6 14 - x = 6 8 x - 8 = 6 14 x - 6 = 8 14 7 + 7 = x 14 7 + 7 = x 14 7 + x = 14 7 7 + x = 14 7 14 - 7 = x 7 14 - 7 = x 7 14 - x = 7 7 14 - x = 7 7 x - 7 = 7 14 x - 7 = 7 14 13 + 2 = x 15 2 + 13 = x 15 13 + x = 15 2 2 + x = 15 13 15 - 13 = x 2 15 - 2 = x 13 15 - x = 13 2 15 - x = 2 13 x - 13 = 2 15 x - 2 = 13 15 12 + 3 = x 15 3 + 12 = x 15 12 + x = 15 3 3 + x = 15 12 15 - 12 = x 3 15 - 3 = x 12 15 - x = 12 3 15 - x = 3 12 x - 12 = 3 15 x - 3 = 12 15 11 + 4 = x 15 4 + 11 = x 15 11 + x = 15 4 4 + x = 15 11 15 - 11 = x 4 15 - 4 = x 11 15 - x = 11 4 15 - x = 4 11 x - 11 = 4 15 x - 4 = 11 15 10 + 5 = x 15 5 + 10 = x 15 10 + x = 15 5 5 + x = 15 10 15 - 10 = x 5 15 - 5 = x 10 15 - x = 10 5 15 - x = 5 10 x - 10 = 5 15 x - 5 = 10 15 9 + 6 = x 15 6 + 9 = x 15 9 + x = 15 6 6 + x = 15 9 15 - 9 = x 6 15 - 6 = x 9 15 - x = 9 6 15 - x = 6 9 x - 9 = 6 15 x - 6 = 9 15 8 + 7 = x 15 7 + 8 = x 15 8 + x = 15 7 7 + x = 15 8 15 - 8 = x 7 15 - 7 = x 8 15 - x = 8 7 15 - x = 7 8 x - 8 = 7 15 x - 7 = 8 15 14 + 2 = x 16 2 + 14 = x 16 14 + x = 16 2 2 + x = 16 14 16 - 14 = x 2 16 - 2 = x 14 16 - x = 14 2 16 - x = 2 14 x - 14 = 2 16 x - 2 = 14 16 13 + 3 = x 16 3 + 13 = x 16 13 + x = 16 3 3 + x = 16 13 16 - 13 = x 3 16 - 3 = x 13 16 - x = 13 3 16 - x = 3 13 x - 13 = 3 16 x - 3 = 13 16 12 + 4 = x 16 4 + 12 = x 16 12 + x = 16 4 4 + x = 16 12 16 - 12 = x 4 16 - 4 = x 12 16 - x = 12 4 16 - x = 4 12 x - 12 = 4 16 x - 4 = 12 16 11 + 5 = x 16 5 + 11 = x 16 11 + x = 16 5 5 + x = 16 11 16 - 11 = x 5 16 - 5 = x 11 16 - x = 11 5 16 - x = 5 11 x - 11 = 5 16 x - 5 = 11 16 10 + 6 = x 16 6 + 10 = x 16 10 + x = 16 6 6 + x = 16 10 16 - 10 = x 6 16 - 6 = x 10 16 - x = 10 6 16 - x = 6 10 x - 10 = 6 16 x - 6 = 10 16 9 + 7 = x 16 7 + 9 = x 16 9 + x = 16 7 7 + x = 16 9 16 - 9 = x 7 16 - 7 = x 9 16 - x = 9 7 16 - x = 7 9 x - 9 = 7 16 x - 7 = 9 16 8 + 8 = x 16 8 + 8 = x 16 8 + x = 16 8 8 + x = 16 8 16 - 8 = x 8 16 - 8 = x 8 16 - x = 8 8 16 - x = 8 8 x - 8 = 8 16 x - 8 = 8 16 15 + 2 = x 17 2 + 15 = x 17 15 + x = 17 2 2 + x = 17 15 17 - 15 = x 2 17 - 2 = x 15 17 - x = 15 2 17 - x = 2 15 x - 15 = 2 17 x - 2 = 15 17 14 + 3 = x 17 3 + 14 = x 17 14 + x = 17 3 3 + x = 17 14 17 - 14 = x 3 17 - 3 = x 14 17 - x = 14 3 17 - x = 3 14 x - 14 = 3 17 x - 3 = 14 17 13 + 4 = x 17 4 + 13 = x 17 13 + x = 17 4 4 + x = 17 13 17 - 13 = x 4 17 - 4 = x 13 17 - x = 13 4 17 - x = 4 13 x - 13 = 4 17 x - 4 = 13 17 12 + 5 = x 17 5 + 12 = x 17 12 + x = 17 5 5 + x = 17 12 17 - 12 = x 5 17 - 5 = x 12 17 - x = 12 5 17 - x = 5 12 x - 12 = 5 17 x - 5 = 12 17 11 + 6 = x 17 6 + 11 = x 17 11 + x = 17 6 6 + x = 17 11 17 - 11 = x 6 17 - 6 = x 11 17 - x = 11 6 17 - x = 6 11 x - 11 = 6 17 x - 6 = 11 17 10 + 7 = x 17 7 + 10 = x 17 10 + x = 17 7 7 + x = 17 10 17 - 10 = x 7 17 - 7 = x 10 17 - x = 10 7 17 - x = 7 10 x - 10 = 7 17 x - 7 = 10 17 9 + 8 = x 17 8 + 9 = x 17 9 + x = 17 8 8 + x = 17 9 17 - 9 = x 8 17 - 8 = x 9 17 - x = 9 8 17 - x = 8 9 x - 9 = 8 17 x - 8 = 9 17 16 + 2 = x 18 2 + 16 = x 18 16 + x = 18 2 2 + x = 18 16 18 - 16 = x 2 18 - 2 = x 16 18 - x = 16 2 18 - x = 2 16 x - 16 = 2 18 x - 2 = 16 18 15 + 3 = x 18 3 + 15 = x 18 15 + x = 18 3 3 + x = 18 15 18 - 15 = x 3 18 - 3 = x 15 18 - x = 15 3 18 - x = 3 15 x - 15 = 3 18 x - 3 = 15 18 14 + 4 = x 18 4 + 14 = x 18 14 + x = 18 4 4 + x = 18 14 18 - 14 = x 4 18 - 4 = x 14 18 - x = 14 4 18 - x = 4 14 x - 14 = 4 18 x - 4 = 14 18 13 + 5 = x 18 5 + 13 = x 18 13 + x = 18 5 5 + x = 18 13 18 - 13 = x 5 18 - 5 = x 13 18 - x = 13 5 18 - x = 5 13 x - 13 = 5 18 x - 5 = 13 18 12 + 6 = x 18 6 + 12 = x 18 12 + x = 18 6 6 + x = 18 12 18 - 12 = x 6 18 - 6 = x 12 18 - x = 12 6 18 - x = 6 12 x - 12 = 6 18 x - 6 = 12 18 11 + 7 = x 18 7 + 11 = x 18 11 + x = 18 7 7 + x = 18 11 18 - 11 = x 7 18 - 7 = x 11 18 - x = 11 7 18 - x = 7 11 x - 11 = 7 18 x - 7 = 11 18 10 + 8 = x 18 8 + 10 = x 18 10 + x = 18 8 8 + x = 18 10 18 - 10 = x 8 18 - 8 = x 10 18 - x = 10 8 18 - x = 8 10 x - 10 = 8 18 x - 8 = 10 18 9 + 9 = x 18 9 + 9 = x 18 9 + x = 18 9 9 + x = 18 9 18 - 9 = x 9 18 - 9 = x 9 18 - x = 9 9 18 - x = 9 9 x - 9 = 9 18 x - 9 = 9 18 17 + 2 = x 19 2 + 17 = x 19 17 + x = 19 2 2 + x = 19 17 19 - 17 = x 2 19 - 2 = x 17 19 - x = 17 2 19 - x = 2 17 x - 17 = 2 19 x - 2 = 17 19 16 + 3 = x 19 3 + 16 = x 19 16 + x = 19 3 3 + x = 19 16 19 - 16 = x 3 19 - 3 = x 16 19 - x = 16 3 19 - x = 3 16 x - 16 = 3 19 x - 3 = 16 19 15 + 4 = x 19 4 + 15 = x 19 15 + x = 19 4 4 + x = 19 15 19 - 15 = x 4 19 - 4 = x 15 19 - x = 15 4 19 - x = 4 15 x - 15 = 4 19 x - 4 = 15 19 14 + 5 = x 19 5 + 14 = x 19 14 + x = 19 5 5 + x = 19 14 19 - 14 = x 5 19 - 5 = x 14 19 - x = 14 5 19 - x = 5 14 x - 14 = 5 19 x - 5 = 14 19 13 + 6 = x 19 6 + 13 = x 19 13 + x = 19 6 6 + x = 19 13 19 - 13 = x 6 19 - 6 = x 13 19 - x = 13 6 19 - x = 6 13 x - 13 = 6 19 x - 6 = 13 19 12 + 7 = x 19 7 + 12 = x 19 12 + x = 19 7 7 + x = 19 12 19 - 12 = x 7 19 - 7 = x 12 19 - x = 12 7 19 - x = 7 12 x - 12 = 7 19 x - 7 = 12 19 11 + 8 = x 19 8 + 11 = x 19 11 + x = 19 8 8 + x = 19 11 19 - 11 = x 8 19 - 8 = x 11 19 - x = 11 8 19 - x = 8 11 x - 11 = 8 19 x - 8 = 11 19 10 + 9 = x 19 9 + 10 = x 19 10 + x = 19 9 9 + x = 19 10 19 - 10 = x 9 19 - 9 = x 10 19 - x = 10 9 19 - x = 9 10 x - 10 = 9 19 x - 9 = 10 19