" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
- 2x -x < -6 - 9
- 3x < -15
x < -15/-3
x < 5 ------> di kali -1, berubah tanda
x > 5
⇔ -2X - X < -6 - 9
⇔ -3X < -15
⇔ X > 5
catataan : karena dikalikan -1, maka tandanya dirubah