3n-9=-12n

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


Simplifying
3n + -9 = -12n

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

Solving
-9 + 3n = -12n

Solving for variable 'n'.

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

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

Combine like terms: 3n + 12n = 15n
-9 + 15n = -12n + 12n

Combine like terms: -12n + 12n = 0
-9 + 15n = 0

Add '9' to each side of the equation.
-9 + 9 + 15n = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 15n = 0 + 9
15n = 0 + 9

Combine like terms: 0 + 9 = 9
15n = 9

Divide each side by '15'.
n = 0.6

Simplifying
n = 0.6

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