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Verified answer
Misalkan: x = buku; y = pensil2x + 3y = 4000
2x + y = 3000 -
------------------------
2y = 1000
y = 1000 : 2
y = 500
2x + y = 3000
2x + 500 = 3000
2x = 3000 - 500
2x = 2500
x = 2500 : 2
x = 1250
5x + y
= 1250 × 5 + 500
= 6250 + 500
= 6750
Harga 1 pensil dan 5 buku adalah 6750