3.8-(1.6-1.2x)=9.6+(3.7-5x)

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