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dasi = y
2x + 3y = 96.000
x - y = 2.000
pakai cara eliminasi!
2x + 3y = 96.000 | x1
2x - 2y = 4.000 | x2
setelah itu dikurangi, jadi
5y = 92.000
y = 18.400
trus tinggal dimasukin
x - y = 2000
x - 18.400 = 2000
x = 20.400
maka 4x = 81.600