-n+2n=7

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Solution for -n+2n=7 equation: 


Simplifying
-1n + 2n = 7

Combine like terms: -1n + 2n = 1n
1n = 7

Solving
1n = 7

Solving for variable 'n'.

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

Divide each side by '1'.
n = 7

Simplifying
n = 7

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