" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
U12= a + 11b= 85
Lalu dieliminasi, sehingga
b= 7
a= 22
S25= 25/2 (2a+ 24. b)
S25 = 25/2 (44+ 168)
S25 = 25/2 (212)
= 25 . 106
=2650