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harga mesin cetak = 5x
harga 5 komputer dan 2 mesin cetak = 48.000.0000
5x + 2(5x) = 48.000.000
<=> 5x + 10x = 48.000.000
<=> 5x + 10x - 10x = 48.000.000 - 10x
<=> 5x = 48.000.000 - 10x
<=> 5x + 10x = 48.000.000 - 10x + 10x
<=> 15x = 48.000.000
<=> 15x : 15 = 48.000.000 : 15
<=> x = 3.2000.000
harga 1 buah komputer = 3.200.000
harga 1 buah mesin cetak = 3.200.000 x 5 = 16.000.000