Verified answer

[tex]0.6 - 1.6x + 6.4 = 21 - 1.2x[/tex]

[tex] - 0.4x = 14[/tex]

х= -35

Ответ:

6x=24=21-12x

6x-24+24=21+12x+24

6x=-12+45

6x+12x=-12x+45+12x

18x=45

[tex]\frac{17x}{18}[/tex]=[tex]\frac{45}{18}[/tex]

x=[tex]\frac{5}{2}[/tex]