4buku+3pensil+1air mineral =20500. 2buku+1pensil+2air mineral = 18500. 2buku+1pensil =6500 tolong dong sekarang persaamaan linear 3 variabel

Question

Matematika Diposting : 2017-09-19 Diupdate : 2017-09-19 deaaa11

Pertanyaan

4buku+3pensil+1air mineral =20500.
2buku+1pensil+2air mineral = 18500.
2buku+1pensil =6500

tolong dong sekarang persaamaan linear 3 variabel

Answer 1

Buku = x
Pensil = y
Air mineral = z

1. 4x+3y+z=20.500
2. 2x+y+2z=18.500
3. 2x+y=6.500

Answer 2

1 buku = 2.500
1 pensil = 1.500
1 air = 6.000