9. Реши уравнения: x : 20 = 160; x : 7 = 42; 92 : x = 46.

1. \(x : 20 = 160\)
   \(x = 160 \cdot 20 = 3200\).
2. \(x : 7 = 42\)
   \(x = 42 \cdot 7 = 294\).
3. \(92 : x = 46\)
   \(x = 92 : 46 = 2\).

Ответ: 3200; 294; 2.