9-3n=15

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Solution for 9-3n=15 equation: 


Simplifying
9 + -3n = 15

Solving
9 + -3n = 15

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 + -3n = 15 + -9

Combine like terms: 9 + -9 = 0
0 + -3n = 15 + -9
-3n = 15 + -9

Combine like terms: 15 + -9 = 6
-3n = 6

Divide each side by '-3'.
n = -2

Simplifying
n = -2

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