jika |2x-3| < 1 dan 2x < 3 maka...

|2x - 3| < 1
2x - 3 < 1
2x < 1 + 3
2x < 4
x < 2

2x-3 < 1
2x < 1+3
2x < 4
x < 4/2
x < 2
dan
2x-3 > -1
2x > -1+3
2x > 2
x > 2/2
x > 1
hp= { x| 2 > x > 1 }
2x-3 < 3
2x < 3+3
2x < 6
x < 6/2
x < 3
dan
2x-3 > -3
2x > -3+3
2x > 0
x > 0/2
x > 0
hp= { x| 3 > x > 0 }