" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
u18=26-->u1+17×b=26
__________-
12b=24
b=2
2=u1+5×2
2=u1+10
-8=u1
u30=-8+29×2
=50