8n-5+4n+5=180

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Solution for 8n-5+4n+5=180 equation: 


Simplifying
8n + -5 + 4n + 5 = 180

Reorder the terms:
-5 + 5 + 8n + 4n = 180

Combine like terms: -5 + 5 = 0
0 + 8n + 4n = 180
8n + 4n = 180

Combine like terms: 8n + 4n = 12n
12n = 180

Solving
12n = 180

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Divide each side by '12'.
n = 15

Simplifying
n = 15

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