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Y=harga 1 unit modem pembeli 2: 2x + 3y= 1.950.000
matriks koefisien matriks konstanta
A= [3 5] B= [3.050.000]
[2 3] [1.950.000]
jika ditanya juga harga 1 unit printer dan modem
jawaban :
|3.050.000 5|
X= |1.950.000 3| = (3.050.000)(3) - (1.950.000)(5)
|3 5| (3)(3) - (2)(5)
|2 3|
=9.150.000 - 9.750.000
9 - 10
= -600.000 = 600.000
-1
|3 3.050.000|
Y= |2 1.950.000| = (3)(1.950.000) - (2)(3.050.000)
|3 5| (3)(3) - (2)(5)
|2 3|
= 5.850.000 - 6.100.000
9 - 10
= -250.000 = 250.000
-1
jadi harga 1 unit printer adalah 600.000 & 1 unit modem adalah 250.000