123. Решите уравнение: 1) 7(x − 9) = 63; 2) 32(x + 14) = 736; 3) 17(3x − 16) = 288; 4) 8(133 − 5x) = 864.

1. \(7(x-9)=63\)
   \(x-9=9\)
   \(x=18\).
2. \(32(x+14)=736\)
   \(x+14=23\)
   \(x=9\).
3. \(17(3x-16)=288\)
   \(3x-16=\frac{288}{17}\)
   \(3x=\frac{560}{17}\)
   \(x=\frac{560}{51}\).
4. \(8(133-5x)=864\)
   \(133-5x=108\)
   \(5x=25\)
   \(x=5\).

Ответ: 1) \(x=18\); 2) \(x=9\); 3) \(x=\frac{560}{51}\); 4) \(x=5\).