Ответ:\(11x-9=4x+19\)\(11x-4x=19+9\)\(7x=28\)\(x=4\).\(7x-5(2x+1)=5x+15\)\(7x-10x-5=5x+15\)\(-3x-5=5x+15\)\(-8x=20\)\(x=-\frac{5}{2}\).Ответ: 1) \(x=4\); 2) \(x=-\frac{5}{2}\).