" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
S12 = 12/2 ( 2 x -5 + (12-1)3)
S12 = 6 (-10 + (11 x 3 )
S12 = 6 ( -10 + 33)
S12 = 6 (23)
S12 = 138
B. diketahui a=6, b=-5
S12 = 12/2 (2 x 6 + (12-1)-5)
S12 = 6 (12 + (11 x -5)
S12 = 6 ( 12 + -55)
S12 = 6 (-43)
S12 = -258