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11x - 4 + 3x - 7x + 3
11x + 3x - 7x - 4 + 3
7x - 1
2. (-2y² - 2y - 4) - (4y² + 2y - 3)
-2y² - 2y - 4 - 4y² - 2y + 3
-2y² - 4y² - 2y - 2y - 4 + 3
-6y² - 4y - 1