March 2019 1 38 Report
Harga 3 buku lebih mahal Rp 900,00 daripada 2 bulpoin.Misalkan harga 1 buku x dan harga 1 bulpoin y rupiah. Persamaan linear dua variabel dari permasalahan tersebut adalah ......

A. 2x+y = 900
B. 2x-3y = 900
C. 3x+2y = 900
D. 3x-2y = 900

Beserta alasannya ya !

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