0.6x-5(0.3x+0.2)=0.5(x-1)-0.8

0.6x-1.5x-1=0.5x-0.5-0.8

0.6x-1.5x-0.5x=-0.5-0.8+1

-1.4x=-0.3

x=-0.3/-1.4

х=0,21428571428