August 2018 1 55 Report
Tolong jawab yaaaa, yg benar.....
1. 2a + 8b - 9 dan 9a - 10b + 12
2. 8x + 10y - 2z dan 6x - 4y + 8z
3. 12p + 7q + 6r dari 5p + 8q - r
4. 2x² + 7x - 8 dari 4x² - 11x - 9
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