Answer:
nI don't get exactly what your asking but if it's 4n + 5n - 15 + 90 + 3n + 25 + 6n - 10 simplfied then the answer is 18n + 90
Explanation:
Add like terms
4n + 5n + 3n + 6n = 18n
-15 + 25 - 10 + 90 = 90
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