Number 14 please. I need help badly.

Answer:
23b - 8
Step-by-step explanation:
Simplify:
(9b + 8) + (12b - 8) + (12b - 8)
Remove parenthesis
9b + 8 + 12b - 8 + 12b - 8
Add like terms
9b + 12b + 12b = 23b
8 - 8 - 8 = -8
Simplified expression:
23b - 8
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-Chetan K