8 + 2x - 2 (4 + x), 15x + 5 - 5 (3x + 1), 42y + 12 - 6 (7y + 2), x2 + 5x - x (x + 5), 8xy + 24 - 8 (xy + 3), 18y + 27x - 9 (2y + 3x), 15 - 3x - 3 (5 - x), 4 + 12x - 4 (1 + 3x), 28 - 21x - 7 (4 - 3x), 2x2 + 3xy - x (2x + 3y), 8x + 14x2 - 2x (4 + 7x), 5y + 5xy - 5y (1 + x),

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