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anggur = y
3x + 2y = 106.000 ⇒×2 = 6x + 4y = 212.000
2x + 4y = 164.000 ⇒×3 = 6x +12y = 492.000
⇒6x-6x + 4y-12y = 212.000-492.000
8y = 280.000
y = 35.000
jadi, harga 1kg anggur Rp.35.000