" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
= 7+(39-1)(2)
=7+38(2)
=7+76
=83
a=7 =u1
u2=9
b=u2-u1=9-7
=2
u39= a+38b
=7+(38×2)
=83