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5A + 6i = 150.000
2A + 3i = 67.500 (kali 2)
5A + 6i = 150.000
4A + 6i = 135.000 -
A = 15.000
harga 6 ayam adalah ...15.000 x 6 = 90.000
2x + 3y = 67.500
di eliminasi jadi
10x + 12y = 300.000
10x +15y = 337.500
----------------- -
-3y = -37.500
y = 37.500/3 = 12.500
5x + 6 (12.500) = 150.000
5x + 75.000 = 150.000
x=150.000-75.000/5
x 15.000
6 x 15.000 = 80.000