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2x + y = 330
X + 3y = 365 dikali 2
2x + y = 330
2x + 6y=730
Dikurang
-5y = - 400
Y=80
2x + 80 = 330
2x = 330 - 80
2x = 250
X=125
X+y = 12500 + 8000 = 20.500