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kaos B = y
4x + 5y = 295.000...........x3
3x + 2y = 160.000...........x4
12x + 15y = 885.000
12x + 8y = 640.000
-------------------------------- -
7y = 245.000
y = 35.000
3x + 2 (35.000) = 160.000
3x = 160.000 - 70.000
x = 90.000 /3
x = 30.000
2 kaos A dan 1 kaos B adalah
2 (30.000) + 35.000
60.000 + 35.000 = 95.000
Jadi harga 2 kaos A dan 1 kaos B adalah Rp. 95.000
4A + 5B = 295.000 | dikali 2 | 8A + 10 B = 590.000 ₋
7A = 210.000
A = 30.000
3A + 2B = 160.000
90000 + 2B = 160.000
2B = 70000
B = 35.000
2A + B = 2(30000) + 35000 = 60000 + 35000 = 95000