9-(х-3)-(6-(2-3х)) =-х-1
9-x+3-(6-2+3x)=-x-1 9-x+3-4-3x+x+1=0 -3x+9=0 -3x=-9 3x=9 x=3
9-x+3-6+2+3x=-x-1 -x-3x+X=-1-9-3+6-2 X=-9