-2/5x+6=1/2(x-1) -2/5x+6=1/2x-1/2 -2/5x-1/2x=-6-1/2 2/5x+1/2x=6+1/2 4/10x+5/10x=12/2+1/2 9/10x=13/2 x=13/2:9/10=13/2*10/9=130/18=7 4/18; Ответ: 7 4/18.