" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
U5 = 65U14 = 38
a + 4b = 65
a + 13b = 38
----------------- -
-9b = 27
b = -3 (Salah)
a + 4b = 65
⇒ a + 4 (-3) = 65
⇒ a + (-12) = 65
⇒ a = 65 + 12
⇒ a = 77 (Salah)
a + (n - 1) b = -520
77 + (n - 1) -3 = -520
(n - 1) -3 = -597
n - 1 = 199
n = 200 (Benar)
Un = 77 + (n - 1) -3
Un = 77 + -3n + 3
Un = -3n + 80 (Benar)
U8 = 77 + (7) . - 3
U8 = 77 + (-21)
U8 = 56 (Salah)
Semoga Membantu!!!