3x = 9, x = 3, x + 6 = 20, x = 14, x /10 = 40, x = 400, 14 = 2 x, x = 7, 2x + 8 = 16, x = 4, 3x - 5 = 22, x = 9, 3x + 6 = 12, x = 2

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