Question

0.4分之x+2－0.2分之2x－1=－0.5

Answer 1

0.4分之x+2－0.2分之2x－1=－0.5

(x+2)/0.4 - (2x-1）/0.2 =-0.5

（x+2)/(2/5) - (2x-1)/(1/5) =-1/2

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

5(x+2)-10(2x-1)=-1

5x+10-20x+10=-1

-15x+20=-1

-15x=-21

x=21/15

x=7/5