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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