2(1-1/x):[(1+4/(x-1)*(x-1)]=2(x-1)/x:[(x-1+4)/(x-1)*(x-1)]=2(x-1)/x:(x+3)=
=2(x-1)/x(x+3)
-----------------------------
4/(x+3)≤2(x-1)/x(x+3)
4/(x+3)-2(x-1)/x(x+3)≤0
(4x-2x+2)/x(x+3)≤0
(2x+2)/x(x+3)≤0
x=-1 x=0 x=-3
_ + _ +
-------(-3)-------------[-1]----------(0)-------
x∈(-∞;-3) U [-1;0)