-n+8n=21

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Solution for -n+8n=21 equation: 


Simplifying
-1n + 8n = 21

Combine like terms: -1n + 8n = 7n
7n = 21

Solving
7n = 21

Solving for variable 'n'.

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

Divide each side by '7'.
n = 3

Simplifying
n = 3

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