9-2n=12

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Solution for 9-2n=12 equation: 


Simplifying
9 + -2n = 12

Solving
9 + -2n = 12

Solving for variable 'n'.

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

Add '-9' to each side of the equation.
9 + -9 + -2n = 12 + -9

Combine like terms: 9 + -9 = 0
0 + -2n = 12 + -9
-2n = 12 + -9

Combine like terms: 12 + -9 = 3
-2n = 3

Divide each side by '-2'.
n = -1.5

Simplifying
n = -1.5

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