6n+3n=-19.5

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Solution for 6n+3n=-19.5 equation: 


Simplifying
6n + 3n = -19.5

Combine like terms: 6n + 3n = 9n
9n = -19.5

Solving
9n = -19.5

Solving for variable 'n'.

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

Divide each side by '9'.
n = -2.166666667

Simplifying
n = -2.166666667

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