" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
13 = a+b pers.. 1
u7 = a+6b
43 = a+ 6b pers.. 2
eliminasi pers 1 dan 2 diperoleh
b = 6 dan a= 7
sn = (n / 2) (2a + (n-1)b)
s10 = (10/2) (2*7+(10-1)6) =340 ;)