Условие:

Решить уравнение:

1) С 2/(x+1) + C 3/(x+1) =7x;

2) С 3/(x-1) + C 2/(x-1) =4(x-1);

3) C 3/x = 4/15 C 4/(x+2);

4) 5C 3/x = C 4/(x+2);

5) C (3x-1)/(3x+1) =120;

6) C (2x-1)/(2x+1) =36.