52. 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 = 9/14 : 2/7 = 9/14 · 7/2 = 9/4.

2. x = 6 : 3/8 = 6 · 8/3 = 16.

3. x = 2/9 : 3 = 2/27.

4. x = 3/7 : 6/11 = 3/7 · 11/6 = 11/14.

5. 18/49 : x = 6/35, поэтому x = 18/49 : 6/35 = 18/49 · 35/6 = 15/7.

6. x = 2,4 : 3/8 = 2,4 · 8/3 = 6,4.

Ответ: 1) 9/4; 2) 16; 3) 2/27; 4) 11/14; 5) 15/7; 6) 6,4.