4(x-3)-3(x+1)≤6x+5
4x-12-3x-3≤6x+5
x-15≤6x+5
x-6x≤5+15
-5x≤20
5x≥-20
x≥ -20:5
x≥ -4
x∈{-4,-3,-2,-1,....}
