Jawabanmu

2014-02-05T20:16:41+07:00
4x+6 < 7x-9
4x+6-6 < 7x-9-6
4x < 7x-15
15 < 7x -4x
15 < 3x
5 < x
2014-02-05T21:00:36+07:00
4x + 6 < 7x - 9
=4x - 7x < -9 - 6
= -3x < -15
= x > 5 :)