12+2n-7n=9

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Solution for 12+2n-7n=9 equation: 


Simplifying
12 + 2n + -7n = 9

Combine like terms: 2n + -7n = -5n
12 + -5n = 9

Solving
12 + -5n = 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 + -5n = 9 + -12

Combine like terms: 12 + -12 = 0
0 + -5n = 9 + -12
-5n = 9 + -12

Combine like terms: 9 + -12 = -3
-5n = -3

Divide each side by '-5'.
n = 0.6

Simplifying
n = 0.6

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