" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
5x-9x >lub= -1
-4x >lub= -1
4x >lub= 1
x >lub= 1/4
x/3-3x/5≥-1
(5x-9x)/15≥-1 /*15
5x-9x≥-15
-4x≥-15 /:(-4)
x≤15/4
x≤3¾