-4(2x+1)≥-(x-1)

-4(2x+1)≥-(x-1) -4*2x-4*1≥-x+1 -8x-4≥-x+1 -8x+x≥1+4 -7x≥5 x≤-5/7 x∈(-∞; -5/7>

-4(2x+1)≥-(x-1)=-4*2x-4*1≥-x+1=-8x-4≥-x+1=-8x+x≥1+4=-7x≥5=x≤-5/7