Ответ:

[tex]\displaystyle x =\frac{1}{3} = 0.3[/tex]

Пошаговое объяснение:

0,4(3х-1)+8(0,8х-0,3)=5-(3,8х+4)

1.2x-0.4+6.4x-2.4=5-3.8x-4

7.6x-2.8=1-3.8x

7.6x+3.8x=1+2.8

11.4x=3.8

x=3.8:11.4

[tex]\displaystyle x =\frac{19}{5}:\frac{57}{5}[/tex]

[tex]\displaystyle x =\frac{19}{5}*\frac{5}{57}[/tex]

[tex]\displaystyle x =19*\frac{1}{57}[/tex]

[tex]\displaystyle x =\frac{1}{3}=0.3[/tex]

Ответ:

1/3

Пошаговое объяснение:

-0,4(3х - 1) + 8(0,8х - 0,3) = 5 - (3,8х + 4)

-1,2х + 0,4 + 6,4х - 2,4 = 5 - 3,8х - 4

5,2х - 2 = 1 - 3,8х

5,2х + 3,8х = 1 + 2

9х = 3

х = 3 : 9

х = 3/9

х = 1/3