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Verified answer
I = banyaknya ikan (dlm kg)a = banyaknya ayam (dlm kg)
3i + a = 37
i + 2a = 29
eliminasi
6i + 2a = 74
i + 2a = 29
----------------- (-)
5i = 45
i = 9
subtitusi
i + 2a = 29
9 + 2a = 29
2a = 29 - 9
2a = 20
a = 10
jadi harga 1kg ikan = 9.000
dan harga 1kg ayam = 10.000