-9=2n+n

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Solution for -9=2n+n equation:


Simplifying
-9 = 2n + n

Combine like terms: 2n + n = 3n
-9 = 3n

Solving
-9 = 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
-9 + -3n = 3n + -3n

Combine like terms: 3n + -3n = 0
-9 + -3n = 0

Add '9' to each side of the equation.
-9 + 9 + -3n = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -3n = 0 + 9
-3n = 0 + 9

Combine like terms: 0 + 9 = 9
-3n = 9

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

Simplifying
n = -3

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