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Verified answer
7-2x=1 atau 7-2x=-1-2x =-6 atau -2x =-8
-x =-3 atau -x =-4
x =3 atau x =4
hp:{3,4}
3x-2<7 atau 3x-2>-7
3x <9 atau 3x >-5
x <3 atau x >-5/3
hp:{x|-5/3<x<3|x∈R}