О 909. Знайдіть корінь рівняння: 1) (4x - 2) + (5x-4)= 9-(5-11x);
2) (7-8x) - (9-12x) + (5x + 4) = -16;
3) 3(4x - 5)-10(2x - 1) = 33;
4) 9(3(x + 1) - 2x) = 7(x + 1).​
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