0,6х - 5(0,3х + 0,2) = 0,5(х - 1) - 0,8
0.6x-1.5x-1=0.5x-0.5-0.8 -0.9x-1=0.5x-1.3 -0.9-0.5x=-1.3+1 -1.4x=-0.3 x=