" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
U8 = a + 7b = 19
__________ -
-3b = 18
b = -6
a + -24 = 37
a = 61
Un = a+(n-1)b
U60 = a+59.b
U60 = 61+59.-6
U60 = -293
Sn = n/2(a+Un)
S60 = 30(61+(-293)
S60 = 30(-232)
S60 = -6.960
Mohon maaf apabila ada kesalahan