harga 2kg apel dan 6 kg melon Rp 46.000,00 sedangkan harga 4 kg apel dan 3 kg melon Rp 47.000,oo. Harga 5 kg apel dan 3 kg melon adalah
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melon dimisalkan y
*2x+6y = 46000 (X2) -> 4x+12y = 92000
4x+3y = 47000 (X1) -> 4x+3y = 47000 (masing-masing dikurangi)
-> 9y = 45000 -> y = 5000
*2x+6y = 46000 -> 2x+30000 = 46000 -> 2x = 16000 -> x = 8000
Jadi 5x+3y = 5(8000) + 3(5000) = 40000+15000 = Rp.55000