3,8-(1,6-1,2х)=9,6+(3,7-5х)
3,8-1,6+1,2х=9,6+3,7-5х
2,2+1,2х=13,3-5х
1,2х+5х=13,3-2,2
6,2х=11,1
Х=11,1: 6,2
Х= 11 1/10 : 6 2/10
Х= (10•11+1)/10: (10•6+2)/10
Х=111/10: 62/10
Х=111/10• 10/62
Х=111/1• 1/62
Х=111/62= 1 49/62
Проверка
3,8-(1,6- 1,2• 1 49/62)=9,6+ (3,7-5• 1 49/62)
3,8- 1,6+ 12/10• 111/62= 9,6+ 3,7- 5• 111/62
2,2+ 6/10• 111/31= 13,3- 555/62
22/10+ 666/310=133/10- 555/62
(22•31)/(10•31)+ 666/310= (133•31)/(10•31)- (555•5)/(62•5)
682/310+ 666/310= 4123/310- 2775/310
1348/310=1348/310
4 108/310= 4 108/310
4 54/155= 4 54/155