Упростите выражения: \(5x-(6x-(7x-(8x-9)))\) \(3x-(2x-(5x-(4x-7)))\) \(x-(4x-11)+(9-2x)\) \(6(3x-4)-5(3x-11)+2\) \(10-9(x-\frac{2}{3})+7x-16\) \(4(2-3x)-(6-x)-2(3x+4)\) \(6(5x-3)+(10-20x)-(6x-4)\) \(9-2x\) \(2x+7\) \(20-5x\) \(3x+33\) \(-2x\) \(-17x-6\) \(4x-4\) :