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celana panjang: A
2A+3B= 410.000 ---- x3
3A+2B= 340.000 ---- x2
6A+9B= 1.230.000
6A+4B= 680.000
(DIKURANGI)
5B= 550.000
B= 550.000/5
B= 110.000 (kemeja)
2A+3B= 410.000
2A+3(110.000)= 410.000
2A+330.000= 410.000
2A= 410.000 - 330.000
2A= 80.000
A= 80.000/2
A= 40.000 (celana)
harga 1 celana dan 2 kemeja
1A+2B= 40.000+[2(110.000)]
= 40.000+220.000
= 260.000