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Rumus:
|a-bx|<c
|a-bx|<-c
jadi:
⇒|3-2x|<4
|-2x|<4-3
| x|<-1/2
⇒|3-2x|<-4
|-2x|<-7
| x|<7/2
Hp{x|x -1/2<x<7/2,x∈R}