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4x-2<=x+5
4x-x<=5+2
3x<=7
x<=7/3
*-(4x-2)<=x+5
-4x+2<=x+5
-4x-x<=5-2
-5x<=3
x>=3/-5dibagi bilngn ngatif tnda dibalik
HP = {>=-3/5 dan <=7/3}