12%.x - 0,4 = 0,467

0,12.x - 0,4 = 0,467

0,12.x = 0,467 + 0,4

0,12.x = 0,867

x = 0,867 : 0,12

x = 7,225

60%x + 0,4x + x:3 = -2

3/5x + 2/5x + 1/3x = -2

(3/5 + 2/5 + 1/3)x = -2

4/3 x = -2

x= -2 : 4/3

x= -3/2

ta có :\(x=\frac{3}{2}\)

k nha

X=2/(60%+0.4+1/3)

111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111

=3/5x+2/5x+x.1=6
=x(3/5+2/5+1)=6
=x.2=6
x=3

=>-1,15x=1

=>x=-100/115=-20/23

-0.6x-4.5x-1+4x+0.8=3.6

x(-0.6-4.5+4)+(-1+0.8)=3.6

-0.1x-0.2                      =3.6

-0.1x                            =3.6+0.2

-0.1x                            =3.8

x                                  =3.8/(-0.1)

x                                  =-38

\(60\%x+0,4x+x:3=2\)

\(\Leftrightarrow\frac{3}{5}x+\frac{2}{5}x+\frac{1}{3}x=2\)

\(x\left(\frac{3}{5}+\frac{2}{5}+\frac{1}{4}\right)=2\)

\(x.\frac{4}{3}=2\)

\(x=2:\frac{4}{3}\)

\(x=\frac{3}{2}\)

mk cx có câu ntn

a)  \(\left(\frac{2}{5}x-2\right)-\left(\frac{3}{2}x+1\right)-\left(-4x-\frac{4}{5}\right)=\)\(\frac{18}{5}\)

\(\frac{2}{5}x-2-\frac{3}{2}x-1-4x+\frac{4}{5}=\frac{18}{5}\)

\(\frac{2}{5}x-\frac{3}{2}x-4x=\frac{18}{5}+2+1-\frac{4}{5}\)

\(\frac{8}{20}x-\frac{30}{20}x-\frac{80}{20}x=\frac{14}{5}+3\)

\(\frac{-51}{10}x=\frac{14}{5}+\frac{15}{5}\)

\(\frac{-51}{10}x=\frac{29}{5}\)

\(x=\frac{29}{5}.\frac{-10}{51}\)

\(x=\frac{-58}{51}\)

vậy \(x=\frac{-58}{51}\)

x=-58/51