Misal :
Uang adik = x
Uang kakak = y
x + 10.000 = y
-x + y = 10.000 . . . (1)
x + y = 50.000 . . . (2)
_________________+
2y = 60.000
y = 30.000
x + y = 50.000
x = 50.000 - y
x = 50.000 - 30.000
x = 20.000
Perbandingan uang kakak dan adik :
30.000 : 20.000 = 3 : 2
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Misal :
Uang adik = x
Uang kakak = y
x + 10.000 = y
-x + y = 10.000 . . . (1)
x + y = 50.000 . . . (2)
_________________+
2y = 60.000
y = 30.000
x + y = 50.000
x = 50.000 - y
x = 50.000 - 30.000
x = 20.000
Perbandingan uang kakak dan adik :
30.000 : 20.000 = 3 : 2
K=uang kakak
A=K-10000
A+K= 50000
(K-10000) + K = 50000
2K - 10000 = 50000
2K = 60000
K = 30000
A=K-10000=30000-10000=20000
perbandingan uang adik dan kakak
A:K = 20000:30000 = 2:3
semoga membantu:))