3 1/4 х - 4 5/7 = 3 5/12 х - 3 3/14 решить уравнение

Решим уравнение 3 1/4 * х - 4 5/7 = 3 5/12 * х - 3 3/14. 

3 1/4 * x - 3 5/12 * x = -3 3/14 + 4 5/7; 

3 * x + 1/4 * x - 3 * x - 5/12 * x = -3 - 3/14 + 4 + 5/7; 

1/4 * x - 5/12 * x = 1 + 5/7 - 3/14; 

3/12 * x - 5/12 * x = 14/17 + 10/14 - 3/14; 

(3 - 5)/12 * x = (14 + 10 - 3)/14;  

-2/12 * x = (14 + 7)/14; 

-1/6 * x = (14 + 7)/14; 

-1/3 * x = (14 + 7)/7; 

-1/3 * x = 14/7 + 7/7; 

-1/3 * x = 2 + 1;  

-1/3 * x = 3; 

-x = 3 * 3; 

-x = 9; 

x = -9; 

Ответ: х = -9.