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ari 150k
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ari = y
(1/2)x+(2/3)y=200.000 |×6| -> 3x+4y=1.200.000
(1/4)x+(1/2)y=125.000 |×8| --> 2x+4y=1.000.000
eliminasi
3x + 4y = 1200000
2x + 4y = 1000000
--------------------------- _
x = 200.000 andre
3(200000) + 4y = 1200000
4y = 1200000 - 600000
y = 600000/4 = 150000 ari