2n+9=-n-4

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Solution for 2n+9=-n-4 equation:


Simplifying
2n + 9 = -1n + -4

Reorder the terms:
9 + 2n = -1n + -4

Reorder the terms:
9 + 2n = -4 + -1n

Solving
9 + 2n = -4 + -1n

Solving for variable 'n'.

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

Add 'n' to each side of the equation.
9 + 2n + n = -4 + -1n + n

Combine like terms: 2n + n = 3n
9 + 3n = -4 + -1n + n

Combine like terms: -1n + n = 0
9 + 3n = -4 + 0
9 + 3n = -4

Add '-9' to each side of the equation.
9 + -9 + 3n = -4 + -9

Combine like terms: 9 + -9 = 0
0 + 3n = -4 + -9
3n = -4 + -9

Combine like terms: -4 + -9 = -13
3n = -13

Divide each side by '3'.
n = -4.333333333

Simplifying
n = -4.333333333

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