" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
misalkan :
bilangan pertama = a
bilangan kedua = b
bilangan ketiga = c
a + b + c = 75 . . . (1)
a - 5 = b + c . . . (2)
b = 1/2 x (a + c) ----> 2b = a + c. . . .(3)
Masukkan pers 1 ke 2, sehingga
a + b + c = a + (a - 5) = 75
2a = 80
a = 40
Masukkan pers 3 ke 1, sehingga
a + b + c = 3b = 75
b = 25
a + b + c = 75
40 + 25 + c = 75
65 + c = 75
c = 10
Jadi, a = 40, b = 25 , c = 10
Mudah2an membantu
The-L