9-4n=12-n

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Solution for 9-4n=12-n equation:


Simplifying
9 + -4n = 12 + -1n

Solving
9 + -4n = 12 + -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 + -4n + n = 12 + -1n + n

Combine like terms: -4n + n = -3n
9 + -3n = 12 + -1n + n

Combine like terms: -1n + n = 0
9 + -3n = 12 + 0
9 + -3n = 12

Add '-9' to each side of the equation.
9 + -9 + -3n = 12 + -9

Combine like terms: 9 + -9 = 0
0 + -3n = 12 + -9
-3n = 12 + -9

Combine like terms: 12 + -9 = 3
-3n = 3

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

Simplifying
n = -1

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