October 2018 2 63 Report
Temukan hasil penjumlahan dari:
A. -4 dan 9a
B. (5a - b) dan (-6a + 7b)
C. (3a² - 2b - c) dan (-2 + 3b - 4c)
D. (3a² - 2a - 8) dan (-5'a² + a - 9)

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