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x-y = 500000
2x = 2500000
x = 1250000
y = 750000
x = y
5 : 3
Rina : x
Rini : y
x + y = 2.000.000
x - y = 500.000
________________-
2y = 1.500.000
y = 750.000 ⇔ uang Rini
x + 750.000 = 2.000.000
x = 2.000.000 - 750. 000
x = 1.250.000 ⇔ uang Rina
Rina : Rini = 5 : 3
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