0=3n+12-9n

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Solution for 0=3n+12-9n equation: 


Simplifying
0 = 3n + 12 + -9n

Reorder the terms:
0 = 12 + 3n + -9n

Combine like terms: 3n + -9n = -6n
0 = 12 + -6n

Solving
0 = 12 + -6n

Solving for variable 'n'.

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

Add '6n' to each side of the equation.
0 + 6n = 12 + -6n + 6n
Remove the zero:
6n = 12 + -6n + 6n

Combine like terms: -6n + 6n = 0
6n = 12 + 0
6n = 12

Divide each side by '6'.
n = 2

Simplifying
n = 2

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