2x + 4 = 12, x = 4, 4x + 8 = 16, x = 2, 6x + 5 = 47, x = 7, 3 + 5x = 3, x = 0, 6x + 2 = 74, x = 12, 6x + 9 = 15, x = 1, 6x + 9 = 75, x = 11, 8 + 6x = 26, x = 3, 5x + 3 = 53, x = 10, 7x + 5 = 54, x = 7, 7 + 2x = 23, x = 8, 10 + 7x = 45, x = 5

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