Ajeng membeli 2 kg mangga dan 1 kg apel dab dia harus membayar Rp 15.000 sedangkan pipit membeli 1 kg mangga dab 2 kg apel dengan harga Rp 18.000. Harga 5 kg ma

41.000 ,maaf kalau salah

1 kg mangga = x
1 kg apel = y


x + 2y = 18000 |x2|
2x + y = 15000 |x1|


2x + 4y = 36000
2x + y = 15000
_____________ _
0 + 3y = 21000
3y = 21000
y = 21000/3
y = 7000

2x + y = 15000
2x + 7000 = 15000
2x = 15000 - 7000
2x = 8000
x = 8000/2
x = 4000

1 kg Mangga = y = 7000
1 kg apel = x = 4000

5 kg mangga + 3 kg apel =
= (5 x 7000 )+ (3 x 4000)
= 35000 + 12000
= 47000