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- 4 < 3 - 2x < 4
- 7 < - 2x < 1
- 1 < 2x < 7
- 1/2 < x < 7/2
3-2x >-4
3+4 > 2x
7 >2x
2x<7
x<7/2
3-2x<4
3-4<2x
-1<2x
2x>-1
x> -1/2
HP{X I -1/2<X<7/2,X∈R }
semoga membantu :)