Х- 5/2= 9- Х/3
Х+1/3х= 9+5/2
1 1/3Х=9+ 2 1/2
(3•1+1)/3Х= 11 1/2
4/3Х= (2•11+1)/2
Х= 23/2 : 4/3
Х= 23/2• 3/4
Х= 69/8
Х= 8 5/8
Проверка
8 5/8- 5/2= 9- (8 5/8)/3
69/8 -(5•4)/(2•4)= 9- 69/8• 1/3
69/8- 20/8= 9- 69/24
49/8= 9- 2 21/24
49/8= 9- 2 7/8
49/8= 8 8/8- 2 7/8
6 1/8= 6 1/8