Question

Harga mutlak 2x-7 < 3??

Answer 1

2x < 3+7
2x < 10
x < 5
Hp = {x|x<5, x€R}

Answer 2

|2x-7|<3 <=> -3<2x-7<3
-3<2x<3+7
-3<2x<10 (dibagi 2)
-3/2<x<5
Hp={x|-3/2<x<5, x€ R}