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y = 5500 - 2x
4x + 3y = 12500
4x + 3(5500 - 2x) = 12500
4x + 16500 - 6x = 12500
-2x = -4000
x = 2000
y = 5500 - 2x
= 5500 - 2(2000)
= 5500 - 4000
= 1500
y=5.500 -2x
4x+3y=12.500
4x + 3(5.500-2x)=12.500
4x + 16.500-6x =12.500
4x-6x=12.500-16.500
-2x=-4000
x = -4000/-2 = 2000
2x+y = 5.500
2.2000+y=5.500
4000+y=5.500
y=5.500-4000
y=1.500
jadi x=2000 dan y=1.500
maaf kalau salah
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