Harga 2 baju dan 3 celana=280.000 sedangkan harga 3 baju dan 1 celana=210.000 tentukanlah a harga 1 baju dan 1 celana

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Harga 2 baju dan 3 celana=280.000 sedangkan harga 3 baju dan 1 celana=210.000 tentukanlah a harga 1 baju dan 1 celana

2b + 3c = 280.00 | ×1 |
3b + c = 210.000 | ×3 |

2b + 3c = 280.000
9b + 3c = 630.000
—————————– (-)
-7b = – 350.000
b = 50.000

2b + 3c = 280.000
2(50.000) + 3c = 280.00
100.000 + 3c = 280.000
3c = 280.000 – 100.000
3c = 180.000
c = 60.000

1 baju + 1 celana

50.000 + 60.000 = Rp 110.000

X = baju
y = celana

2x+3y=280.000 ×3= 6x+9y=840.000
3x+1y=210.00 ×2= 6x+2y=420.000
————————– –
7y=420.000
y=420.000÷7
y=Rp 60.000/celana

2x+3y=280.000
2x+3(60.000)=280.000
2x+180.000=280.000
2x=280.000-180.000
2x=100.000
x=100.000÷2= Rp 50.000/baju

^^smoga membantu:)^^