Jawab:
2250
Penjelasan dengan langkah-langkah:
Misal : Buku = x
Pensil = y
Maka :
2x + y = 6.000
2x + 3y = 9000
----------------------- -
-2y = -3000
y = 1500
2x + 3.1500 = 9000
2x + 4500 = 9000
2x = 9000 - 4500
2x = 4500
x = 2250
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Jawab:
2250
Penjelasan dengan langkah-langkah:
Misal : Buku = x
Pensil = y
Maka :
2x + y = 6.000
2x + 3y = 9000
----------------------- -
-2y = -3000
y = 1500
2x + 3y = 9000
2x + 3.1500 = 9000
2x + 4500 = 9000
2x = 9000 - 4500
2x = 4500
x = 2250