452. Решите уравнение: 1) 2/7 x = 9/14; 2) 3/8 x = 6; 3) 3x = 2/9; 4) x : 6/11 = 3/7; 5) 18/49 : x = 6/35; 6) 3/8 x = 2,4.

1. \(x=\frac{9}{14}:\frac27=\frac94\).
2. \(x=6:\frac38=16\).
3. \(x=\frac29:3=\frac{2}{27}\).
4. \(x=\frac37\cdot\frac6{11}=\frac{18}{77}\).
5. \(x=\frac{18}{49}:\frac6{35}=\frac{15}{7}\).
6. \(2{,}4=\frac{12}{5}\), поэтому \(x=\frac{12}{5}:\frac38=\frac{32}{5}=6{,}4\).

Ответ: 1) \(\frac94\); 2) 16; 3) \(\frac{2}{27}\); 4) \(\frac{18}{77}\); 5) \(\frac{15}{7}\); 6) 6,4.