Answer:
8 + 3x - 15 + 9x
Group like terms
(+8 -15) (+3x + 9x)
12x -7
C
C. 12x - 7
Explanation:
8 + 3(x - 5) + 9x
8 + 3x -15 + 9x
Re-ordering and adding like terms...
12x - 7
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