Perform the indicated operation.(9n7 + 7n + 8n5) + (5n5 + 3n7 + 6n)
A. 12n + 13n7 + 13n5
B. 38n13
C. 10n7 + 14n5 + 14n
D. 12n7 + 13n5 + 13n
Answer: D
Mathematics
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A. 
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