Ответ:
\(7(9x+4)=5(5x-11)\); \(63x+28=25x-55\); \(38x=-83\); \(x=-\frac{83}{38}\).
\(7(-7x+4)=2(5x+9)\); \(-49x+28=10x+18\); \(-59x=-10\); \(x=\frac{10}{59}\).
\(3(12x-8)=5(4x+23)\); \(36x-24=20x+115\); \(16x=139\); \(x=\frac{139}{16}\).
\(3(-7x+5)=9(4x-3)\); \(-21x+15=36x-27\); \(-57x=-42\); \(x=\frac{14}{19}\).
\(12(3x-5)=13(9-7x)\); \(36x-60=117-91x\); \(127x=177\); \(x=\frac{177}{127}\).
