" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
- 5 - 3
- 8
---------------------------------------
- (- 6) - (- 1)
+ 6 + 1
7
-------------------------------------
+ (+ 4) - ( - 2)
+ 4 + 2
6