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--ll-- celana
2b+1c=140.000 ×2 : 4b+2c=280.000
4b+2c=280.000
3b+2c=235.000
b = 45.000
*4b+2c=280.000
4(45.000)+2c=280.000
180.000+2c=280.000
2c =280.000-180.000
2c =100.000
c =100.000/2
c =50.000
jadi harga baju(b) =45.000
harga celana(c)=50.000
harga 4baju dan 5 celana= 4(45.000)+5 (50.000)
= 180.000+250.000
= 430.000
*tolong di cek ulang kalau ada salah hitung