n-2n=3

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Solution for n-2n=3 equation: 


Simplifying
n + -2n = 3

Combine like terms: n + -2n = -1n
-1n = 3

Solving
-1n = 3

Solving for variable 'n'.

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

Divide each side by '-1'.
n = -3

Simplifying
n = -3

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