September 2018 1 17 Report
Tentukan menggunakan rumus sibtitusi
1. y= x+5 dan 2x+y = 17
2. x=6-y dan 3x-y = 6
3. 2y= x-8 dan x+2y = 10
4. 2y-x =7 dan x + 2y = 21

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