x + 12 = 17, x = 5, x + 13 = 61, x = 48, x - 11 = 8, x = 19, x - 9 = -1, x = 8, 6x = 240, x = 40, 45x = 270, x = 6, x ➗ 12 = 9, x = 108, x ➗ 7 = 8, x = 56, 3x + 4 = 70, x = 22, 9x - 15 = 93, x = 12, 3(4x - 2) = 18, x = 2.

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