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Soalnya agak ribet
Baju = x
Kaos = y
Jadi persamaannya
3x + 5y = 1080000 |×2|
2x + 3y = 684000 |×3|
6x + 10y = 2160000
6x + 9y = 2052000
_______________ _
y = 108.000
3x + 5y = 1080.000
3x + 5(108000) = 1080000
3x + 540000 = 1080000
3x = 540000
x = 180.000
Harga 1 baju 2 kaos = 180.000 + 2(108.000) = 180.000 + 216.000 = 396.000