" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
6b-7b-3b-2a+5a =
-4b +3 a
3a -4b
= -2a + 5a + 6b - 7b - 3b
= 3a - b - 3b
= 3a - 4b
Semoga membantu...