" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
5n - 3n = 7
2n = 7
n = 7/2
n = 3,5
-7=3n-5n
-7=-2n
7=2n
7 : 2 = n
3,5=n