12+n=-9

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Solution for 12+n=-9 equation: 


Simplifying
12 + n = -9

Solving
12 + n = -9

Solving for variable 'n'.

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

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

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

Combine like terms: -9 + -12 = -21
n = -21

Simplifying
n = -21

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