Tolong jawab 1 kg anggur sama dengan 3kali 1kg salak, ibu membeli 2kg anggur dan 5kg salak seharga 38.500 A.tulis model matematikanya B.tentukan harga 1kg anggur dan 1kg salak
YosuaSaragih1.misal anggur = A Salak = B A = 3 B 2 A + 5 B = 38500 2 (3 B) + 5 B = 38.500
2.2 A + 5 B = 38500 2 (3B) + 5B = 38500 6B + 5 B = 38500 11 B = 38500 B = 3500
2 A + 5 B = 38500 2A + 5 (3500) = 38500 2A + 17500 = 38500 2A = 38500 - 17500 2A = 21000 A = 10500
anggur = A Salak = B
A = 3 B
2 A + 5 B = 38500
2 (3 B) + 5 B = 38.500
2.2 A + 5 B = 38500
2 (3B) + 5B = 38500
6B + 5 B = 38500
11 B = 38500
B = 3500
2 A + 5 B = 38500
2A + 5 (3500) = 38500
2A + 17500 = 38500
2A = 38500 - 17500
2A = 21000
A = 10500
harga 1 kg salak = 3500
harga 1 kg anggur = 10500
semoga membantu